American shoes are usually a little larger than British shoes, American men's shoes are one size larger than British men's shoes, making a men's 12 in the US the same size as a men's 11 in the UK. Men, women and children are listed below American shoe size, each American shoe size is converted into UK shoe size and EU shoe size, and the length of each shoe size in inches and cm.
Women's Shoe Size Conversion
US size
EU size
UK size
inches
cm
mm
4
35
2
9
22.8
228
5
36
3
9.3
23.5
235
6
37
4
9.5
24.1
241
7
38
5
9.8
24.8
248
8
39
6
10
25.4
254
9
40
7
10.2
26
260
10
41
8
10.5
26.7
267
11
42
9
10.7
27.3
273
Men's Shoe Size Conversion
US size
EU size
UK size
inches
cm
mm
11
44.5
10
10.7
27.3
273
11.5
45
10.5
10.9
27.6
276
12
46
11
11
27.9
279
13
47
12
11.3
28.6
286
14
48
13
11.5
29.2
292
4
35.5
3
9
22.8
228
5
37
4
9.3
23.5
235
6
38
5
9.5
24.1
241
7
39
6
9.8
24.8
248
8
40.5
7
10
25.4
254
8.5
41
7.5
10.1
25.7
257
9
42
8
10.2
26
260
9.5
42.5
8.5
10.4
26.3
263
10
43
9
10.5
26.7
267
10.5
44
9.5
10.6
27
270
Kids' Shoe Size Conversion
age
ages
US size
EU size
UK size
inches
cm
mm
0-1 months
baby(pre-walking)
-
15
-
3.3 - 3.5
8.4 - 9
84-90
0-3 months
baby(pre-walking)
-
16
0
3.6 - 3.9
9.1 - 9.8
91-98
3-6 months
baby(pre-walking)
2
17
1
3.9 - 4.1
9.9 - 10.4
99-104
6-9 months
baby(pre-walking)
3
18
2
4.1 - 4.4
10.5 - 11.1
105-111
6-9 months
baby(pre-walking)
4
19
3
4.4 - 4.6
11.2 - 11.8
112-118
9-12 months
baby(pre-walking)
5
20
4
4.7 - 4.9
11.9 - 12.5
119-125
12-18 months
baby(pre-walking)
6
21
4.5
5 - 5.2
12.6 - 13.2
126-132
18-24 months
baby(pre-walking)
7
22
5
5.2 - 5.5
13.3 - 13.9
133-139
2 years
baby(pre-walking)
8
23
6
5.5 - 5.7
14 - 14.5
140-145
18-24 months
toddler
6
22
5
5.2 - 5.5
13.3 - 13.9
133-139
2 years
toddler
7
23
6
5.5 - 5.7
14 - 14.5
140-145
2-3 years
toddler
8
24
7
5.7 - 6
14.6 - 15.2
146-152
2-3 years
toddler
8
24
7.5
5.9 - 6.1
14.9 - 15.5
149-155
3 years
toddler
9
25
8
6 - 6.3
15.3 - 15.9
153-159
3-4 years
toddler
9.5
26
8.5
6.3 - 6.5
16 - 16.6
160-166
4-6 years
toddler
10
27
9
6.6 - 6.8
16.7 - 17.2
167-172
5-7 years
toddler
10
27
9.5
6.7 - 6.9
17 - 17.6
170-176
5-7 years
toddler
11
28
10
6.8 - 7
17.3 - 17.9
173-179
6-8 years
toddler
11
28
10.5
6.9 - 7.2
17.6 - 18.2
176-182
6-8 years
toddler
12
29
11
7.1 - 7.3
18 - 18.5
180-185
6-8 years
toddler
12
29
11.5
7.2 - 7.4
18.3 - 18.9
183-189
6-8 years
toddler
13
30
12
7.3 - 7.6
18.6 - 19.2
186-192
8-9 years
toddler
13
31
12.5
7.6 - 7.8
19.3 - 19.9
193-199
3 years
young kids
9
25
8
6 - 6.3
15.3 - 15.9
153-159
3-4 years
young kids
9.5
26
8.5
6.3 - 6.5
16 - 16.6
160-166
4-6 years
young kids
10
27
9
6.6 - 6.8
16.7 - 17.2
167-172
5-7 years
young kids
10
27
9.5
6.7 - 6.9
17 - 17.6
170-176
5-7 years
young kids
11
28
10
6.8 - 7
17.3 - 17.9
173-179
6-8 years
young kids
11
28
10.5
6.9 - 7.2
17.6 - 18.2
176-182
6-8 years
young kids
12
29
11
7.1 - 7.3
18 - 18.5
180-185
6-8 years
young kids
12
29
11.5
7.2 - 7.4
18.3 - 18.9
183-189
6-8 years
young kids
13
30
12
7.3 - 7.6
18.6 - 19.2
186-192
8-9 years
young kids
13
31
12.5
7.6 - 7.8
19.3 - 19.9
193-199
8-9 years
young kids
1
32
13
7.9 - 8.1
20 - 20.6
200-206
8-10 years
young kids
1
32
13.5
8 - 8.2
20.3 - 20.9
203-209
8-10 years
young kids
2
33
1
8.1 - 8.4
20.7 - 21.3
207-213
9-11 years
young kids
2
33
1.5
8.3 - 8.5
21 - 21.6
210-216
9-11 years
young kids
3
34
2
8.4 - 8.7
21.4 - 22
214-220
10-12 years
young kids
3
35
2.5
8.7 - 8.9
22.1 - 22.7
221-227
10-12 years
young kids
3.5
36
3
8.8 - 9.1
22.4 - 23
224-230
10-12 years
young kids
4
36
3.5
9 - 9.2
22.8 - 23.4
228-234
11-13 years
young kids
4.5
37
4
9.1 - 9.3
23.1 - 23.7
231-237
11-13 years
young kids
5
37
4.5
9.3 - 9.5
23.5 - 24.1
235-241
8-9 years
big kids
2
33
1
8.1 - 8.4
20.7 - 21.3
207-213
9-11 years
big kids
2
33
1.5
8.3 - 8.5
21 - 21.6
210-216
9-11 years
big kids
3
34
2
8.4 - 8.7
21.4 - 22
214-220
10-12 years
big kids
3
35
2.5
8.7 - 8.9
22.1 - 22.7
221-227
10-12 years
big kids
3.5
36
3
8.8 - 9.1
22.4 - 23
224-230
10-12 years
big kids
4
36
3.5
9 - 9.2
22.8 - 23.4
228-234
11-13 years
big kids
4.5
37
4
9.1 - 13.3
23.1 - 23.7
231-237
11-13 years
big kids
5
37
4.5
9.3 - 9.5
23.5 - 24.1
235-241
12-14 years
big kids
5.5
38
5
9.4 - 9.6
23.8 - 24.5
238-245
12-14 years
big kids
6
38
5.5
9.5 - 9.8
24.2 - 24.8
242-248
13-15 years
big kids
6.5
39
6
9.6 - 9.9
24.5 - 25.1
245-251
13-15 years
big kids
7
40
6.5
9.8 - 10
24.9 - 25.5
249-255
16 years +
big kids
7.5
41
7
10 - 10.2
25.3 - 25.9
253-259
16 years +
big kids
8
41
7.5
10.1 - 10.3
25.6 - 26.2
256-262
16 years +
big kids
8.5
42
8
10.2 - 10.4
25.9 - 26.5
259-265
16 years +
big kids
9
42
8.5
10.4 - 10.6
26.3 - 26.9
263-269
16 years +
big kids
9.5
43
9
10.5 - 10.7
26.7 - 27.3
267-273
16 years +
big kids
10
43
9.5
10.6 - 10.9
27 - 27.6
270-276
Children of different ages have different size systems. Since the shoe standards of different regions and different manufacturers are different, the above size conversion chart can only be used as a reference