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A shoe size is an indication of the fitting size of a shoe for a person.

There are a number of different shoe-size systems used worldwide. While all shoe sizes use a number to indicate the length of the shoe, they differ in exactly what they measure, what unit of measurement they use, and where the size 0 (or 1) is positioned. Some systems also indicate the shoe width, sometimes also as a number, but in many cases by one or more letters. Some regions use different shoe-size systems for different types of shoes (e.g. men's, women's, children's, sport, and safety shoes). This article sets out several complexities in the definition of shoe sizes. In practice, shoes are often tried on for both size and fit before they are purchased.

Deriving the shoe size

Foot versus shoe and last

The length of a person's foot is commonly defined as the distance between two parallel lines that are perpendicular to the foot and in contact with the most prominent toe and the most prominent part of the heel. Foot length is measured with the subject standing barefoot and the weight of the body equally distributed between both feet.

The sizes of the left and right feet are often slightly different. In this case, both feet are measured, and purchasers of mass-produced shoes are advised to purchase a shoe size based on the larger foot, as most retailers do not sell pairs of shoes in non-matching sizes.

Each size of shoe is considered suitable for a small interval of foot lengths, typically limited by half-point of the shoe size system.

A shoe-size system can refer to three characteristic lengths:

The median length of feet for which a shoe is suitable. For customers, this measure has the advantage of being directly related to their body measures. It applies equally to any type, form, or material of shoe. However, this measure is less popular with manufacturers,^{[citation needed]} because it requires them to test carefully for each new shoe model, for which range of foot sizes it is recommendable. It puts on the manufacturer the burden of ensuring that the shoe will fit a foot of a given length.
The length of the inner cavity of the shoe. This measure has the advantage that it can be measured easily on the finished product. However, it will vary with manufacturing tolerances and only gives the customer very crude information about the range of foot sizes for which the shoe is suitable.
The length of the "last", the foot-shaped template over which the shoe is manufactured. This measure is the easiest one for the manufacturer to use, because it identifies only the tool used to produce the shoe. It makes no promise about manufacturing tolerances or for what size of foot the shoe is actually suitable. It leaves all responsibility and risk of choosing the correct size with the customer. Further, the last can be measured in several different ways, resulting in different measurements.^[1]

All these measures differ substantially from one another for the same shoe. For example, the inner cavity of a shoe must typically be 15 mm longer than the foot, and the shoe last would be 2 size points larger than the foot, but this varies between different types of shoes and the shoe size system used. The typical range lies between 1⁄2 to 2⁄3 inch (12.7 to 16.9 mm) for the UK/US size system and 4⁄3 to 5⁄3 cm (13.3 to 16.7 mm) for the European size system, but may extend to 1⁄4 to 3⁄4 inch (6.4 to 19.1 mm) and 2⁄3 to 6⁄3 cm (6.7 to 20.0 mm).

Length

Sizing systems also differ in the units of measurement they use. This also results in different increments between shoe sizes, because usually only "full" or "half" sizes are made.

The following length units are commonly used today to define shoe-size systems:^{[citation needed]}

The Paris point equates to 2⁄3 centimetre (6.67 mm; 0.26 in). Whole sizes are incremented by 1 Paris point; this corresponds to 3.33 millimetres (0.131 in) between half sizes. This unit is commonly used in Continental Europe, and Russia and former USSR countries.
The barleycorn is an old English unit that equates to 1⁄3 inch (8.47 mm). This is the basis for current UK and North American shoe sizes. "Today in America, the sizing generally adheres relatively closely to a formula of 3 times the length of the foot in inches (the barleycorn length), less a constant (22 for men and 21 for women). In the UK, shoe sizes follow a similar method of computation, except that the constant is 23, and it is the same for men and women".^[2]

Metric measurements in millimetres (mm) or centimetres (cm), with intervals of 5 mm and 7.5 mm are used in the international Mondopoint system (USSR/Russia and East Asia).

Since the early 2000s, labels on sports shoes typically include sizes measured in all four systems: EU, UK, US, and Mondopoint.

Zero point

The sizing systems also place size 0 (or 1) at different locations:

Size 0 as a foot's length of 0. The shoe size is directly proportional to the length of the foot in the chosen unit of measurement. Sizes of children's, men's, and women's shoes, as well as sizes of different types of shoes, can be compared directly. This is used with the Mondopoint system (USSR/Russia and East Asia).
Size 0 as the length of the shoe's inner cavity of 0. The shoe size is then directly proportional to the inner length of the shoe. This is used with systems that also take the measurement from the shoe. While sizes of children's, men's and women's shoes can be compared directly, this is not necessarily true for different types of shoes that require a different amount of "wiggle room" in the toe box. This is used with the Continental European system.
Size 0 (or 1) can just be simply a shoe of a given length. Typically, this will be the shortest length deemed practical; but this can be different for children's, teenagers', men's, and women's shoes - making it difficult to compare sizes. In America, the baseline for women's shoes is seven inches and for men's it is 7⁠1/3⁠ in.; in the UK, the baseline for both is 7⁠2/3⁠ in.^[2]

Width

Some systems also include the width of a foot (or the girth of a shoe last), but do so in a variety of ways:

Measured foot width in millimetres (mm) - this is done with the Mondopoint system.
Measured width as a letter (or combination of letters), which is taken from a table (indexed to length and width/girth) or just assigned on an ad-hoc basis. Examples are (each starting with the narrowest width):
- AAA, AA, A, B, C, D, E, EE, EEE is the typical North American system and follows the brannock device standards, per the system B is narrow, C is regular, D is medium, E is wide, EE is extra wide and so on. The unlettered D size is the norm for men and B for women.
- 4A, 3A, 2A, A, B, C, D, E, 2E, 3E, 4E, 5E, 6E (variant North American).
- C, D, E, F, G, H (common UK; "medium" is usually F but varies by manufacturer—makers Edward Green and Crockett & Jones, among others, use E instead, but one maker's E is not necessarily the same size as another's).
- N (narrow), M (medium) or R (regular), W (wide), XW (extra wide).
- For children's sizes in North America, typical letters used are M or B (medium), W or D (wide), EW or 2E (extra wide).

The width for which these sizes are suitable can vary significantly between manufacturers. The A–E width indicators used by most American, Canadian, and some British shoe manufacturers are typically based on the width of the foot, and common step sizes are 3⁄16 inch (4.8 mm).

Foot Width Conversion - approximation^[3]^[4]^[5]^[6]
N-M-R-W system	North American system	North American variant	UK system	German system
SS (super slim)	AAAA	4A
S (slim)	AAA	3A
N (narrow)	AA	2A	B ("narrow")	E ("very slim")
N (narrow)	A	A	C	E
M (medium)	B	B	D ("Standard")	F ("slim")
M (medium)	C	C	D	F
R (regular)	D	D	D	F
W (wide)	E	E	E ("Wide")	G ("comfort")
XW/EW (extra wide) / WW (wide wide)	EE	2E	EE	H ("strong")
UW (ultra wide) / WWW	EEE	3E	EEE	J ("super wide")
UW (ultra wide) / WWW	EEEE	4E		K
XXW (extra extra wide)	EEEEE	5E		L
XXW (extra extra wide)	EEEEEE	6E		M

Difficulties

There could be differences between various shoe size tables from shoemakers and shoe stores. They are usually due to the following factors:

Different methods of measuring the shoes, different manufacturing processes, or different allowances^[1] even when the same system is used.
An indication in centimetres or inches can mean the length of the foot or the length of the shoe's inner cavity.
Differing amounts of wiggle room required for different sizes of shoes.
For wide feet, a shoe several sizes larger (and actually too long) may be required and may also result in inconsistent size indications when different typical widths are attributed to specific shoe sizing systems.
Some tables for children take future growth into account. The shoe size is then larger than what would correspond to the actual length of the foot.^[7]

Conversion tables available on the Web often contain obvious errors, not taking into account different zero points or wiggle room.

Although shoe size systems are not fully standardised, the ISO/TC 137 had released a technical specification ISO/TS 19407:2015 for converting shoe sizes across various local sizing systems. Even though the problem of converting shoe sizes accurately has yet to be fully resolved, this standard serves as "a good compromise solution" for shoe-buyers.^[8]^[9]

Common sizing systems

United Kingdom

Shoe size in the United Kingdom, Ireland, India, Pakistan and South Africa is based on the length of the last used to make the shoes, measured in barleycorns (1⁄3 inch) starting from the smallest size deemed practical, which is called size zero. It is not formally standardised. The last is typically longer than the foot heel to toe length by 1⁄2 to 2⁄3 in or 1+1⁄2 to 2 barleycorns, so to determine the shoe size based on actual foot length one must add 2 barleycorns.

A child's size zero is equivalent to 4 inches (a hand = 12 barleycorns = 10.16 cm), and the sizes go up to size 13+1⁄2 (measuring 25+1⁄2 barleycorns, or 8+1⁄2 inches (21.59 cm)). Thus, the calculation for a children's shoe size in the UK is:

child shoe size (barleycorns) = 3 \times last length (in) - 12

equivalent to:

child shoe size (barleycorns) \approx 3 \times foot length (in) - 10

.

An adult size one is then the next size up (26 barleycorns, or 8+2⁄3 in (22.01 cm)) and each size up continues the progression in barleycorns.^[10] The calculation for an adult shoe size in the UK is thus:

adult shoe size (barleycorns) = 3 \times last length (in) - 25

equivalent to:

adult shoe size (barleycorns) \approx 3 \times foot length (in) - 23

.

Although this sizing standard is nominally for both men and women, some manufacturers use different numbering for women's UK sizing.

In Australia and New Zealand, the UK system is followed for men and children's footwear. Women's footwear follows the US sizings.

In Mexico, shoes are sized either according to the foot length they are intended to fit, in cm, or alternatively to another variation of the barleycorn system, with sizes calculated approximately as:

adult shoe size (barleycorns) = 3 \times last length (in) - 25 + 1 ⁄ 2

equivalent to:

adult shoe size (barleycorns) \approx 3 \times foot length (in) - 23 + 1 ⁄ 2

.

United States

In the United States and Canada, the traditional system is similar to the British system but there are different zero points for children's, men's, and women's shoe sizes. The most common is the customary system where men's shoes are one size longer than the UK equivalent, making a men's 13 in the US the same size as a men's 12 in the UK.

Customary

The customary system is offset by 1⁄4 barleycorn, or 1⁄12 in (2.12 mm), comparing to the UK sizes. The men's range starts at size 1, with zero point corresponding to the children's size 13 which equals 24+3⁄4 barleycorns or 8+1⁄4 inches (20.96 cm).

However, most US manufacturers are using greater offsets, such as 1⁄2 and 1 barleycorns.^[11] Therefore in current practice, US men's size 1 equals 25 barleycorns, or 8+1⁄3 in (21.17 cm), so the calculation for a male shoe size in the United States is:

male shoe size (barleycorns) = 3 \times last length (in) - 24

equivalent to:

male shoe size (barleycorns) \approx 3 \times foot length (in) - 22

.

In the "standard" or "FIA" (Footwear Industries of America) scale, women's sizes are men's sizes plus 1 (so a men's 10+1⁄2 is a women's 11+1⁄2):

female shoe size (barleycorns) = 3 \times last length (in) - 23

equivalent to:

female shoe size (barleycorns) \approx 3 \times foot length (in) - 21

.

There is also the "common" scale, where women's sizes are equal to men's sizes plus 1+1⁄2.

Children's shoes start from size zero, which is equivalent to 3+11⁄12 inches (11+3⁄4 barleycorns = 99.48 mm), and end at 13+1⁄2. Thus the formula for children's sizes in the US is

child shoe size (barleycorns) = 3 \times last length (in) - 11 3 ⁄ 4

equivalent to:

child shoe size (barleycorns) \approx 3 \times foot length (in) - 9 3 ⁄ 4

.

Alternatively, a Mondopoint-based scale running from K4 to K13 and then 1 to 7 is in use.^[12] K4 to K9 are toddler sizes, K10 to K13 are pre-school and 1 to 7 are grade school sizes.

Brannock Device

The Brannock Device is a measuring instrument invented by Charles F. Brannock in 1925 and now found in many shoe stores. The recent formula used by the Brannock device assumes a foot length of 2 barleycorns less than the length of the last; thus, men's size 1 is equivalent to a last's length of 8+1⁄3 in (21.17 cm) and foot's length of 7+2⁄3 in (19.47 cm), and children's size 1 is equivalent to 4+1⁄4 in (10.8 cm) last's length and 3+7⁄12 in (9.1 cm) foot's length.^[13]^[14]

The device also measures the length of the arch, or the distance between the heel and the ball (metatarsal head) of the foot. For this measurement, the device has a shorter scale at the instep of the foot with an indicator that slides into position. If this scale indicates a larger size, it is taken in place of the foot's length to ensure proper fitting.^[7]

For children's sizes, additional wiggle room is added to allow for growth.^[7]

The device also measures the width of the foot and assigns it designations of AAA, AA, A, B, C, D, E, EE, or EEE. The widths are 3⁄16 inches apart and differ by shoe length.^[13]

Some shoe stores and medical professionals use optical 3D surface scanners to precisely measure the length and width of both feet and recommend the appropriate shoe model and size.^[15]

Continental Europe

In the Continental European system, the shoe size is the length of the last, expressed in Paris points or 2⁄3 cm (6.67 mm), for both sexes and for adults and children alike. The last is typically longer than the foot heel to toe length by 4⁄3 cm (13.33 mm) to 5⁄3 cm (16.67 mm), or 2 to 2+1⁄2 Paris points, so to determine the shoe size based on actual foot length one must add 2 Paris points.

Because a Paris point is 2⁄3 of a centimetre, a centimetre is 3⁄2 Paris points, and the formula is as follows:

shoe size (Paris points) = 3 ⁄ 2 \times last length (cm)

equivalent to:

shoe size (Paris points) \approx (3 ⁄ 2 \times foot length (cm)) + 2

The Continental European system is used in Austria, Belgium, Denmark, France, Germany,^[16] Italy, Luxembourg, the Netherlands, Norway, Poland, Portugal, Spain,^[17] Sweden, Switzerland, and most other continental European countries. It is also used in Middle Eastern countries (such as Iran), Brazil—which uses the same method but subtracts 2 from the final result, in effect measuring foot size instead of last size^{[citation needed]}—and, commonly, Hong Kong. The system is sometimes described as Stich size (from Pariser Stich, the German name for the Paris point), or Stichmaß size (from a German name of a micrometer for internal measurements).

Mondopoint

The Mondopoint shoe length system is widely used in the sports industry to size athletic shoes, ski boots, skates, and pointe ballet shoes; it was also adopted as the primary shoe sizing system in the Soviet Union,^[18] Russia,^[19] East Germany, China,^[20] Japan, Taiwan, and South Korea, and as an optional system in the United Kingdom,^[21] India,^[22] Mexico, and European countries. The Mondopoint system is also used by NATO and other military services.

The Mondopoint system was introduced in the 1970s by International Standard ISO 2816:1973 "Fundamental characteristics of a system of shoe sizing to be known as Mondopoint" and ISO 3355:1975 "Shoe sizes – System of length grading (for use in the Mondopoint system)".^[23] ISO 9407:2019, "Shoe sizes—Mondopoint system of sizing and marking",^[24] is the current version of the standard.

The Mondopoint system is based on average foot length and foot width for which the shoe is suitable, measured in millimetres. The length of the foot is measured as horizontal distance between the perpendiculars in contact with the end of the most prominent toe and the most prominent part of the heel. The width of the foot is measured as horizontal distance between vertical lines in contact with the first and fifth metatarsophalangeal joints. The perimeter of the foot is the length of the foot circumference, measured with a flexible tape at the same points as foot width. The origin of the grade is zero.

The labeling typically includes foot length, followed by an optional foot width: a shoe size of 280/110 indicates a foot length of 280 millimetres (11.0 in) and width of 110 millimetres (4.3 in). Other customary markings, such as EU, UK and US sizes, may also be used.

Because Mondopoint takes the foot width into account, it allows for better fitting than most other systems. A given shoe size shall fit every foot with indicated average measurements, and those differing by no more than a half-step of the corresponding interval grid. Standard foot lengths are defined with interval steps of 5 mm for casual footwear and steps of 7.5 mm for specialty (protective) footwear. The standard is maintained by ISO Technical Committee 137 "Footwear sizing designations and marking systems."

East Asia

In Japan, mainland China, Taiwan, and South Korea, the Mondopoint system is used as defined by national standard Japanese Industrial Standards (JIS) S 5037:1998 and its counterparts Guobiao (GB/T) 3293.1-1998, Chinese National Standard (CNS) 4800-S1093:2000 and Korean Standards Association (KS) M 6681:2007.

Foot length and girth (foot circumference) are taken into account.^[25] The foot length is indicated in centimetres; an increment of 5 mm is used.

The length is followed by designators for girth (A, B, C, D, E, EE, EEE, EEEE, F, G), which are specified in an indexed table as foot circumference in millimetres for each given foot length; foot width is also included as supplemental information. There are different tables for men's, women's, and children's (less than 12 years of age) shoes. Not all designators are used for all genders and in all countries. For example, the largest girth for women in Taiwan is EEEE, whereas in Japan, it is F.

The foot length and width can also be indicated in millimetres, separated by a slash or a hyphen.

Soviet Union (Russia, Commonwealth of Independent States)

Historically the Soviet Union used the European (Paris point) system, but the Mondopoint metric system was introduced in the 1980s by GOST 24382-80 "Sizes of Sport Shoes" (based on ISO 2816:1973) and GOST 11373-88 "Shoe Sizes" (based on ISO 3355:1975), and lately by GOST R 58149-2018 (based on ISO 9407:1991)

Standard metric foot sizes can be converted to the nearest Paris point (2⁄3 cm) sizes using approximate conversion tables; shoes are marked with both foot length in millimetres, as for pointe ballet shoe sizes, and last length in European Paris point sizes (although such converted Stichmaß sizes may come 1⁄2 to 1 size smaller than comparable European-made adult footwear, and up to 1+1⁄2 sizes smaller for children's footwear, according to ISO 19407 shoe size definitions). Foot lengths are aligned to 5 mm intervals for sports and casual shoes, and 7.5 mm for protective/safety shoes. Optional foot width designations includes narrow, normal (medium or regular), and wide grades.

Infant sizes start at 16 (95 mm) and pre-school kids at 23 (140 mm); schoolchildren sizes span 32 (202.5 mm) to 40 (255 mm) for girls and 32 to 44 (285 mm) for boys. Adult sizes span 33 (210 mm) to 44 for women and 38 (245 mm) to 48 (310 mm) for men.

GOST 11373-88 shoe size conversion
Mondopoint/foot length (mm)		Stichmaß size
5.0	7.5	Infants	Pre-school children
95		16	—
100		16.5
105		17
110		18
115		19
120		19.5
125		20
130		21
135		22
140		22.5
145		—	23
150			24
155			25
160			25.5
165			26
170			27
	172.5		27.5
175			28
180	180		28.5
185			29
	187.5		29.5
190			30
195	195		31
200			31.5

(5 mm and 7.5 mm steps)
Mondopoint/foot length (mm)		Stichmaß size
5.0	7.5	Girls	Boys	Women	Men
	202.5	32		—	—
205		32		—
210	210	33
215		34
	217.5	34.5
220		34.5
225	225	35
230		36
	232.5	36.5
235		37
240	240	37.5
245		38
	247.5	38.5
250		39
255	255	40
260		—	40.5
	262.5		41
265			41
270	270		42
275			43
	277.5		43
280			43.5
285	285		—	44
290				—	45
	292.5				45.5
295					46
300	300				46.5
305					47
	307.5				47.5
310					48

ISO 19407 and shoe size conversion

ISO/TS 19407:2023 Footwear - Sizing - Conversion of sizing systems is a technical specification from the International Organization for Standardization.[1] It contains basic description and conversion tables for major shoe sizing systems^[8] including Mondopoint with length steps of 5 mm and 7.5 mm, European Paris point system, and UK 1⁄3-inch system. The standard has also been adopted as Russian GOST R 57425-2017.

The standard is maintained by ISO/TC 137, which also developed ISO/TS 19408:2015 Footwear - Sizing - Vocabulary and terminology; in development are companion standards ISO/TS 19409 "Footwear - Sizing - Measurement of last dimensions" and ISO/TS 19410 "Footwear - Sizing - Inshoe measurement".

Shoe sizing

The adult shoe sizes are calculated from typical last length, which is converted from foot length in millimetres by adding an allowance of two shoe sizes:

${\begin{aligned}{\text{EUR shoe size}}&={\frac {L+2\times {6.66{\bar {6}}}}{6.6{\bar {6}}}}={\frac {3}{20}}\times {L}+2\\[3pt]{\text{UK shoe size}}&={\frac {L+2\times {8.4{\bar {6}}}}{8.4{\bar {6}}}}-25={\frac {3}{25.4}}\times {L}-23\end{aligned}}$

where L is foot length in millimetres.

Direct conversion between adult UK, Continental European and Mondopoint shoe size systems is derived as follows:

${\begin{aligned}L&={\frac {20}{3}}\times \left({\text{EUR shoe size}}-2\right)={\frac {25.4}{3}}\times \left({\text{UK shoe size}}+23\right)\\[3pt]{\text{EUR shoe size}}&={1.27\times \left({\text{UK shoe size}}+23\right)}+2\\[3pt]{\text{UK shoe size}}&={\frac {{\text{EUR shoe size}}-2}{1.27}}-23\end{aligned}}$

Using these formulas, the standard derives shoe size tables for adults and children, based on actual foot length measurement (insole) in millimetres. Typical last length ranges are also included (13 to 25 mm over foot length for adults, 8% greater than foot length plus 6 mm for children).

Exact foot lengths may contain repeating decimals because the formulas include division by 3; in practice, approximate interval steps of 6.67 mm and 8.47 mm are used, and sizes are rounded to either the nearest half size or closest matching Mondopoint size.

Adults' shoe sizes
Foot length			Mondopoint		EUR	UK	US
(mm)	(cm)	(inch)	5.0 mm	7.5 mm	6.67 mm	8.46 mm	0.3 inch
210.0			210	210	33.5
211.6		8+1⁄3				2	3
213.3	21+1⁄3				34
215.0			215
215.9		8+1⁄2				2.5	3.5
216.6	21+2⁄3				34.5
217.5				217.5
220.0	22		220		35
220.13		8+2⁄3				3	4
223.3	22+1⁄3				35.5
224.36		8+5⁄6				3.5	4.5
225.0			225	225
226.6	22+2⁄3				36
228.6		9				4	5
230.0	23		230		36.5
232.5				232.5
232.83		9+1⁄6				4.5	5.5
233.3	23+1⁄3				37
235.0			235
236.6	23+2⁄3				37.5
237.06		9+1⁄3				5	6
240.0	24		240	240	38
241.3		9+1⁄2				5.5	6.5
243.3	24+1⁄3				38.5
245.0			245
245.53		9+2⁄3				6	7
246.6	24+2⁄3				39
247.5				247.5
249.76		9+5⁄6				6.5	7.5
250.0	25		250		39.5
253.3	25+1⁄3				40
254.0		10				7	8
255.0			255	255
256.6	25+2⁄3				40.5
258.23		10+1⁄6				7.5	8.5
260.0	26		260		41
262.46		10+1⁄3				8	9
262.5				262.5
263.3	26+1⁄3				41.5
265.0			265
266.6	26+2⁄3				42
266.7		10.5				8.5	9.5
270.0	27		270	270	42.5
270.93		10+2⁄3				9	10
273.3	27+1⁄3				43
275.0			275
275.16		10+5⁄6				9.5	10.5
276.6	27+2⁄3				43.5
277.5				277.5
279.4		11				10	11
280.0	28		280		44
283.3	28+1⁄3				44.5
283.63		11+1⁄6				10.5	11.5
285.0			285	285
286.6	28+2⁄3				45
287.86		11+1⁄3				11	12
290.0	29		290		45.5
292.1		11+1⁄2				11.5	12.5
292.5				292.5
293.3	29+1⁄3				46
295.0			295
296.3		11+2⁄3				12	13
296.6	29+2⁄3				46.5
300.0	30		300	300	47
300.56		11+5⁄6				12.5	13.5
303.3	30+1⁄3				47.5
304.8		12				13	14
305.0			305
306.6	30+2⁄3				48
307.5				307.5
309.03		12+1⁄6				13.5	14.5
310.0	31		310		48.5
313.26		12+1⁄3				14	15
313.3	31+1⁄3				49
315.0			315	315
316.6	31+2⁄3				49.5
317.5		12+1⁄2				14.5	15.5
320.0	32		320		50
321.73		12+2⁄3				15	16
mm	cm	inch	5.0 mm	7.5 mm	6.6 mm	8.46 mm	0.3 inch
Foot length			Mondopoint		EUR	UK	US

Children's shoe sizes
Foot length			Mondopoint	EUR	UK	US
(mm)	(cm)	(inch)	5.0 mm	6.6 mm	8.46 mm	8.46 mm
118.53		4+2⁄3		19.5	3.5	4
120	12	4+3⁄4	120	20	4	4.5
123.3	12+1⁄3	4+5⁄6	125	20.5	4.5	5
126.6	12+2⁄3	5		21	5	5.5
130	13	5+1⁄12	130	21.5	5.5
133.3	13+1⁄3	5+1⁄4		22		6
136.6	13+2⁄3	5+1⁄3	135	22.5	6	6.5
139.7	14	5+1⁄2	140	23	6.5
141.816		5+7⁄12				7
143.3	14+1⁄3	5+2⁄3		23.5	7	7.5
146.6	14+2⁄3	5+3⁄4	145	24	7.5
150	15	5+11⁄12	150	24.5		8
153.3	15+1⁄3	6	155	25	8	8.5
156.6	15+2⁄3	6+1⁄6		25.5	8.5	9
160	16	6+1⁄3	160	26	9
163.3	16+1⁄3	6+5⁄12		26.5		9.5
166.6	16+2⁄3	6+7⁄12	165	27	9.5	10
169.3	17	6+2⁄3	170	27.5	10	10.5
173.3	17+1⁄3	6+5⁄6		28	10.5	11
176.6	17+2⁄3	7	175	28.5	11	11.5
179.916	18	7+1⁄12	180	29	11.5
183.3	18+1⁄3	7+1⁄4		29.5		12
186.6	18+2⁄3	7+1⁄3	185	30	12	12.5
190.5	19	7+1⁄2	190	30.5	12.5	13
192.616	19+1⁄3	7+7⁄12		31	13	13.5
196.6	19+2⁄3	7+3⁄4	195	31.5	13.5	1
200	20	7+5⁄6	200	32	0.5	1.5
203.3	20+1⁄3	8	205	32.5	1	2
206.6	20+2⁄3			33	1.5	2.5
210	21		210	33.5	2	3
(mm)	(cm)	(inch)	5.0 mm	6.67 mm	8.46 mm	8.46 mm
Foot length			Mondopoint	EUR	UK	US

Size marking

It is recommended to include size marking in each of the four sizing systems on the shoe label and on the package. The principal system used for manufacturing the shoe needs to be placed first and emphasized with a boldface.

The standard includes quick conversion tables for adult shoe size marking; they provide matching sizes for shoes marked in Mondopoint, European, and UK systems. Converted values are rounded to a larger shoe size to increase comfort.

Mondopoint conversion
Mondo	EUR	UK	US
Mondo	EUR	UK	Men	Women
215	34	2.5	3.5	4.5
220	35	3	4	5
225	35.5	3.5	4.5	5.5
230	36.5	4	5	6
235	37	4.5	5.5	6.5
240	38	5.5	6.5	7.5
245	38.5	6	7	8
250	39.5	6.5	7.5	8.5
255	40	7	8	9
260	41	7.5	8.5	9.5
265	41.5	8.5	9.5	10.5
270	42.5	9	10	11
275	43	9.5	10.5	11.5
280	44	10	11	12
285	44.5	10.5	11.5	12.5
290	45.5	11	12	13
295	46	12	13	14
300	47	12.5	13.5	14.5
305	47.5	13	14	15
310	48.5	13.5	14.5	15.5
315	49	14	15	16
320	50	15	16	17

European shoe size conversion
EUR	Mondo	UK	US
EUR	Mondo	UK	Men	Women
34	215	2	3	4
34.5	215	2.5	3.5	4.5
35	220	3	4	5
35.5	225	3.5	4.5	5.5
36	225	4	5	6
36.5	230	4	5	6
37	235	4.5	5.5	6.5
37.5	235	5	6	7
38	240	5.5	6.5	7.5
38.5	245	5.5	6.5	7.5
39	245	6	7	8
39.5	250	6.5	7.5	8.5
40	255	7	8	9
40.5	255	7.5	8.5	9.5
41	260	7.5	8.5	9.5
41.5	265	8	9	10
42	265	8.5	9.5	10.5
42.5	270	9	10	11
43	275	9.5	10.5	11.5
43.5	275	9.5	10.5	11.5
44	280	10	11	12
44.5	285	10.5	11.5	12.5
45	285	11	12	13
45.5	290	11.5	12.5	13.5
46	295	11.5	12.5	13.5
46.5	295	12	13	14
47	300	12.5	13.5	14.5
47.5	305	13	14	15
48	305	13	14	15
48.5	310	13.5	14.5	15.5
49	315	14	15	16
49.5	315	14.5	15.5	16.5
50	320	15	16	17

United Kingdom shoe size conversion
UK	Mondo	EUR	US
UK	Mondo	EUR	Men	Women
2	210	34	3	4
2.5	215	34.5	3.5	4.5
3	220	35	4	5
3.5	225	35.5	4.5	5.5
4	230	36.5	5	6
4.5	235	37	5.5	6.5
5	235	37.5	6	7
5.5	240	38	6.5	7.5
6	245	39	7	8
6.5	250	39.5	7.5	8.5
7	255	40	8	9
7.5	260	40.5	8.5	9.5
8	260	41.5	9	10
8.5	265	42	9.5	10.5
9	270	42.5	10	11
9.5	275	43.5	10.5	11.5
10	280	44	11	12
10.5	285	44.5	11.5	12.5
11	290	45.5	12	13
11.5	290	46	12.5	13.5
12	295	46.5	13	14
12.5	300	47	13.5	14.5
13	305	47.5	14	15
13.5	310	48.5	14.5	15.5
14	315	49	15	16
14.5	320	49.5	15.5	16.5
15	320	50	16	17

Conversion between US and UK sizing

UK and US children's shoe sizes
Last length		Foot length/Brannock		UK sizes	US sizes
(in)	(mm)	(in)	(mm)	Children's	Children's
3+11⁄12	99.483	3+1⁄4	82.55		0
4	101.6	3+1⁄3	84.66	0
4+1⁄12	103.716	3+5⁄12	86.783		0.5
4+1⁄6	105.83	3+1⁄2	88.9	0.5
4+1⁄4	107.95	3+7⁄12	91.016		1
4+1⁄3	110.06	3+2⁄3	93.13	1
4+5⁄12	112.183	3+3⁄4	95.25		1.5
4+1⁄2	114.3	3+5⁄6	97.35	1.5
4+7⁄12	115.71	3+11⁄12	99.483		2
4+2⁄3	118.53	4	101.6	2
4+3⁄4	120.65	4+1⁄12	103.716		2.5
4+5⁄6	122.76	4+1⁄6	105.83	2.5
4+11⁄12	124.883	4+1⁄4	107.95		3
5	127.0	4+1⁄3	110.06	3
5+1⁄12	129.116	4+5⁄12	112.183		3.5
5+1⁄6	131.23	4+1⁄2	114.3	3.5
5+1⁄4	133.35	4+7⁄12	116.416		4
5+1⁄3	135.46	4+2⁄3	118.53	4
5+5⁄12	137.583	4+3⁄4	120.65		4.5
5+1⁄2	139.7	4+5⁄6	122.76	4.5
5+7⁄12	141.816	4+11⁄12	124.883		5
5+2⁄3	143.93	5	127.0	5
5+3⁄4	146.05	5+1⁄12	129.116		5.5
5+5⁄6	148.16	5+1⁄6	131.23	5.5
5+11⁄12	150.283	5+1⁄4	133.35		6
6	152.4	5+1⁄3	135.46	6
6+1⁄12	154.516	5+5⁄12	137.583		6.5
6+1⁄6	156.63	5+1⁄2	139.7	6.5
6+1⁄4	158.75	5+7⁄12	141.816		7
6+1⁄3	160.86	5+2⁄3	143.92	7
6+5⁄12	162.983	5+3⁄4	146.05		7.5
6+1⁄2	165.1	5+5⁄6	148.16	7.5
6+7⁄12	167.216	5+11⁄12	150.283		8
6+2⁄3	169.3	6	152.4	8
6+3⁄4	171.45	6+1⁄12	154.516		8.5
6+5⁄6	173.56	6+1⁄6	156.63	8.5
6+11⁄12	173.56	6+1⁄4	158.75		9
7	177.8	6+1⁄3	160.86	9
7+1⁄12	179.913	6+5⁄12	162.983		9.5
7+1⁄6	182.03	6+1⁄2	165.1	9.5
7+1⁄4	183.4	6+7⁄12	166.51		10
7+1⁄3	186.26	6+2⁄3	169.3	10
7+5⁄12	188.383	6+3⁄4	170.45		10.5
7+1⁄2	190.5	6+5⁄6	173.56	10.5
7+7⁄12	192.616	6+11⁄12	174.97		11
7+2⁄3	194.73	7	177.8	11
7+3⁄4	196.85	7+1⁄12	179.916		11.5
7+5⁄6	198.96	7+1⁄6	182.03	11.5
7+11⁄12	201.083	7+1⁄4	184.15		12
8	203.2	7+1⁄3	186.26	12
8+1⁄12	205.315	7+5⁄12	188.383		12.5
8+1⁄6	207.43	7+1⁄2	190.5	12.5
8+1⁄4	209.5	7+7⁄12	192.616		13
8+1⁄3	211.6	7+2⁄3	194.73	13
8+5⁄12	213.783	7+3⁄4	196.85		13.5
8+1⁄2	215.9	7+5⁄6	198.96	13.5
(in)	(mm)	(in)	(mm)	Children's	Children's
Last length		Foot length/Brannock		UK sizes	US sizes

UK and US adult shoe sizes
Last length		Foot length/Brannock		UK sizes	US sizes
(in)	(mm)	(in)	(mm)	Adults'	Men's	Women's
8	203.2	7+1⁄3	186.26	(12)	(12.25)	1
8+1⁄6	207.43	7+1⁄2	190.5	(12.5)	(12.75)	1.5
8+1⁄3	211.6	7+2⁄3	194.73	0 (13)	1 (13.25)	2
8+1⁄2	215.9	7+5⁄6	198.96	0.5 (13.5)	1.5	2.5
8+2⁄3	220.13	8	203.2	1	2	3
8+5⁄6	224.36	8+1⁄6	207.43	1.5	2.5	3.5
9	228.6	8+1⁄3	211.6	2	3	4
9+1⁄6	232.83	8+1⁄2	215.9	2.5	3.5	4.5
9+1⁄3	237.06	8+2⁄3	220.13	3	4	5
9+1⁄2	241.3	8+5⁄6	224.36	3.5	4.5	5.5
9+2⁄3	245.53	9	228.6	4	5	6
9+5⁄6	249.76	9+1⁄6	232.83	4.5	5.5	6.5
10	254.0	9+1⁄3	237.06	5	6	7
10+1⁄6	258.23	9+1⁄2	241.3	5.5	6.5	7.5
10+1⁄3	262.46	9+2⁄3	245.53	6	7	8
10+1⁄2	266.7	9+5⁄6	249.76	6.5	7.5	8.5
10+2⁄3	270.93	10	254.0	7	8	9
10+5⁄6	275.16	10+1⁄6	258.23	7.5	8.5	9.5
11	279.4	10+1⁄3	262.46	8	9	10
11+1⁄6	283.63	10+1⁄2	266.7	8.5	9.5	10.5
11+1⁄3	287.86	10+2⁄3	270.93	9	10	11
11+1⁄2	292.1	10+5⁄6	275.16	9.5	10.5	11.5
11+2⁄3	296.3	11	279.4	10	11	12
11+5⁄6	300.56	11+1⁄6	283.63	10.5	11.5	12.5
12	304.8	11+1⁄3	287.86	11	12	13
12+1⁄6	309.03	11+1⁄2	292.1	11.5	12.5	13.5
12+1⁄3	313.26	11+2⁄3	296.3	12	13	14
12+1⁄2	317.5	11+5⁄6	300.56	12.5	13.5	14.5
12+2⁄3	321.73	12	304.8	13	14	15
12+5⁄6	325.97	12+1⁄6	309.03	13.5	14.5	15.5
13	330.2	12+1⁄3	313.26	14	15	16
13+1⁄6	334.43	12+1⁄2	317.5	14.5	15.5	16.5
13+1⁄3	338.67	12+2⁄3	321.73	15	16	17
13+1⁄2	342.9	12+5⁄6	325.97	15.5	16.5	17.5
13+2⁄3	347.13	13	330.2	16	17	18
(in)	(mm)	(in)	(mm)	Adults'	Men's	Women's
Last length		Foot length/Brannock		UK sizes	US sizes

References

^ ^a ^b Andersson, Bendt. "Recommendations to suppliers and manufacturers of orthopedic footwear concerning sizes of shoes and lasts" (PDF) (in Swedish). Archived from the original (PDF) on 2012-06-16. Retrieved 2009-01-06.
^ ^a ^b Melissa (30 March 2016). "Why are shoe sizes as they are?". Today I found out. (12×3=36. US(m): 36−22=14, UK: 36−23=13, EU:30.5×1.5=45.75 then +2 "for comfort" plus rounding = 48)
^ "Schuhweiten richtig messen & Größentabelle – F, G und H". www.blitzrechner.de (in German). Retrieved 2024-03-27.
^ "Men's UK Shoe Width". sizechart.com. Retrieved 2024-03-27.
^ Franke, Rieke (2021-05-15). "Alles über Schuhweiten • Die Breite-Füße-Infothek". Breite Fuesse (in German). Retrieved 2024-03-27.
^ Janine (2023-04-26). "Women's shoe widths explained + width letters chart for US, UK & Europe - Pretty Big Shoes". www.prettybigshoes.com. Retrieved 2024-03-27.
^ ^a ^b ^c "Instructions". Genuine Brannock Device. Retrieved 2009-01-06.
^ ^a ^b "ISO/TS 19407:2015 - Footwear -- Sizing -- Conversion of sizing systems". International Organization for Standardization. Retrieved 2018-06-22.
^ "Shoe Size Conversion: Use this EASY Tool, Size Guide + How To". BlitzResults.com. 2017-11-11. Retrieved 2018-06-22.
^ Cairns, Warwick (2007). About the Size of It. Macmillan. ISBN 978-0-230-01628-6.
^ Alexander Besching: Handbuch für die Schuhindustrie. 14. Auflage. Hüthig, Heidelberg 1990, S. 170.
^ ASICS - Shoe Size Guide "
^ ^a ^b "History". Genuine Brannock Device. Retrieved 2009-01-06.
^ "Size Conversion Chart". Genuine Brannock Device. Retrieved 2022-02-09..
^ Telfer S, Woodburn J (2010). "The use of 3D surface scanning for the measurement and assessment of the human foot". J Foot Ankle Res. 3: 19. doi:10.1186/1757-1146-3-19. PMC 2944246. PMID 20815914.
^ German Standard DIN 66074:1975, Shoe sizes
^ Spanish Standard UNE 59850:1998, Shoes: Size designation
^ GOST 11373-88
^ GOST R 58149-2018
^ GB/T 3293:1998
^ BS 4981:1973
^ IS 8751:1978
^ R. Boughey. Size Labelling of Footwear. Journal of Consumer Studies & Home Economics. Volume 1, Issue 2. June 1977. DOI:10.1111/j.1470-6431.1977.tb00197.x
^ International Standard ISO 9407:2019, Shoe sizes—Mondopoint system of sizing and marking
^ (in Japanese) 靴のサイズ表示について・分かっているようで分かっていない話 tr. About shoe size display ... A story that seems to be known but not known Rakuten.co.jp Archived 2011-07-27 at the Wayback Machine

External links

IS 8751-1 (1978): Footwear sizes in mondopoint system, Part 1: Fundamental characteristics
IS 8751-2 (1978): Footwear sizes in mondopoint system, Part 2: Length grading

[orthopedic-1] Andersson, Bendt. "Recommendations to suppliers and manufacturers of orthopedic footwear concerning sizes of shoes and lasts" (PDF) (in Swedish). Archived from the original (PDF) on 2012-06-16. Retrieved 2009-01-06.

[Melissa-2] Melissa (30 March 2016). "Why are shoe sizes as they are?". Today I found out. (12×3=36. US(m): 36−22=14, UK: 36−23=13, EU:30.5×1.5=45.75 then +2 "for comfort" plus rounding = 48)

[3] "Schuhweiten richtig messen & Größentabelle – F, G und H". www.blitzrechner.de (in German). Retrieved 2024-03-27.

[4] "Men's UK Shoe Width". sizechart.com. Retrieved 2024-03-27.

[5] Franke, Rieke (2021-05-15). "Alles über Schuhweiten • Die Breite-Füße-Infothek". Breite Fuesse (in German). Retrieved 2024-03-27.

[6] Janine (2023-04-26). "Women's shoe widths explained + width letters chart for US, UK & Europe - Pretty Big Shoes". www.prettybigshoes.com. Retrieved 2024-03-27.

[brannock2-7] "Instructions". Genuine Brannock Device. Retrieved 2009-01-06.

[:0-8] "ISO/TS 19407:2015 - Footwear -- Sizing -- Conversion of sizing systems". International Organization for Standardization. Retrieved 2018-06-22.

[9] "Shoe Size Conversion: Use this EASY Tool, Size Guide + How To". BlitzResults.com. 2017-11-11. Retrieved 2018-06-22.

[10] Cairns, Warwick (2007). About the Size of It. Macmillan. ISBN 978-0-230-01628-6.

[Besching170-11] Alexander Besching: Handbuch für die Schuhindustrie. 14. Auflage. Hüthig, Heidelberg 1990, S. 170.

[12] ASICS - Shoe Size Guide "

[brannock-13] "History". Genuine Brannock Device. Retrieved 2009-01-06.

[brannockChart-14] "Size Conversion Chart". Genuine Brannock Device. Retrieved 2022-02-09..

[15] Telfer S, Woodburn J (2010). "The use of 3D surface scanning for the measurement and assessment of the human foot". J Foot Ankle Res. 3: 19. doi:10.1186/1757-1146-3-19. PMC 2944246. PMID 20815914.

[16] German Standard DIN 66074:1975, Shoe sizes

[17] Spanish Standard UNE 59850:1998, Shoes: Size designation

[18] GOST 11373-88

[19] GOST R 58149-2018

[20] GB/T 3293:1998

[21] BS 4981:1973

[22] IS 8751:1978

[23] R. Boughey. Size Labelling of Footwear. Journal of Consumer Studies & Home Economics. Volume 1, Issue 2. June 1977. DOI:10.1111/j.1470-6431.1977.tb00197.x

[24] International Standard ISO 9407:2019, Shoe sizes—Mondopoint system of sizing and marking

[japan-25] (in Japanese) 靴のサイズ表示について・分かっているようで分かっていない話 tr. About shoe size display ... A story that seems to be known but not known Rakuten.co.jp Archived 2011-07-27 at the Wayback Machine

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[6]

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[14]

[15]

[16]

[17]

[18]

[19]

[20]

[21]

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[24]

[25]

v t e ISO standards by standard number
List of ISO standards – ISO romanizations – IEC standards
1–9999	1 2 3 4 6 7 9 16 17 31 -0 -1 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 68-1 128 216 217 226 228 233 259 261 262 302 306 361 500 518 519 639 -1 -2 -3 -5 -6 646 657 668 690 704 732 764 838 843 860 898 965 999 1000 1004 1007 1073-1 1073-2 1155 1413 1538 1629 1745 1989 2014 2015 2022 2033 2047 2108 2145 2146 2240 2281 2533 2709 2711 2720 2788 2848 2852 2921 3029 3103 3166 -1 -2 -3 3297 3307 3601 3602 3864 3901 3950 3977 4031 4157 4165 4217 4909 5218 5426 5427 5428 5725 5775 5776 5800 5807 5964 6166 6344 6346 6373 6385 6425 6429 6438 6523 6709 6943 7001 7002 7010 7027 7064 7098 7185 7200 7498 -1 7637 7736 7810 7811 7812 7813 7816 7942 8000 8093 8178 8217 8373 8501-1 8571 8583 8601 8613 8632 8651 8652 8691 8805/8806 8807 8820-5 8859 -1 -2 -3 -4 -5 -6 -7 -8 -8-I -9 -10 -11 -12 -13 -14 -15 -16 8879 9000/9001 9036 9075 9126 9141 9227 9241 9293 9314 9362 9407 9496 9506 9529 9564 9592/9593 9594 9660 9797-1 9897 9899 9945 9984 9985 9995
10000–19999	10006 10007 10116 10118-3 10160 10161 10165 10179 10206 10218 10279 10303 -11 -21 -22 -28 -238 10383 10585 10589 10628 10646 10664 10746 10861 10957 10962 10967 11073 11170 11172 11179 11404 11544 11783 11784 11785 11801 11889 11898 11940 (-2) 11941 11941 (TR) 11992 12006 12052 12182 12207 12234-2 12620 13211 -1 -2 13216 13250 13399 13406-2 13450 13485 13490 13567 13568 13584 13616 13816 13818 14000 14031 14224 14289 14396 14443 14496 -2 -3 -6 -10 -11 -12 -14 -17 -20 14617 14644 14649 14651 14698 14764 14882 14971 15022 15189 15288 15291 15398 15408 15444 -3 -9 15445 15438 15504 15511 15686 15693 15706 -2 15707 15897 15919 15924 15926 15926 WIP 15930 15938 16023 16262 16355-1 16485 16612-2 16750 16949 (TS) 17024 17025 17100 17203 17369 17442 17506 17799 18004 18014 18181 18245 18629 18916 19005 19011 19092 -1 -2 19114 19115 19125 19136 19407 19439 19500 19501 19502 19503 19505 19506 19507 19508 19509 19510 19600 19752 19757 19770 19775-1 19794-5 19831
20000–29999	20000 20022 20121 20400 20802 20830 21000 21001 21047 21122 21500 21827 22000 22275 22300 22301 22395 22537 23000 23003 23008 23009 23090-3 23092 23094-1 23094-2 23270 23271 23360 23941 24517 24613 24617 24707 24728 25178 25964 26000 26262 26300 26324 27000 series 27000 27001 27002 27005 27006 27729 28000 29110 29148 29199-2 29500
30000+	30170 31000 32000 37001 38500 39075 40500 42010 45001 50001 55000 56000 80000
Category

Latest revision as of 17:57, 24 November 2024

Deriving the shoe size

Foot versus shoe and last

Length

Zero point

Width

Difficulties

Common sizing systems

United Kingdom

United States

Customary

Brannock Device

Continental Europe

Mondopoint

East Asia

Soviet Union (Russia, Commonwealth of Independent States)

ISO 19407 and shoe size conversion

Shoe sizing

Size marking

Conversion between US and UK sizing

See also

References

External links