The following lists the conversion of UK shoe sizes to US shoe sizes for different groups, including women, men, big kids, young kids, toddlers and babies. For each group, you can see the conversion of every shoe size from the UK shoe size system to the US shoe size system, you can also see the length of each shoe size in inches, cm and millimeters.
(UK to US Conversion) Womens' Shoe Size
UK Size
US Size
Inches
cm
mm
2
4
9
22.8
228
3
5
9.3
23.5
235
4
6
9.5
24.1
241
5
7
9.8
24.8
248
6
8
10
25.4
254
7
9
10.2
26
260
8
10
10.5
26.7
267
9
11
10.7
27.3
273
(UK to US Conversion) Mens' Shoe Size
UK Size
US Size
Inches
cm
mm
3
4
9
22.8
228
4
5
9.3
23.5
235
5
6
9.5
24.1
241
6
7
9.8
24.8
248
7
8
10
25.4
254
7.5
8.5
10.1
25.7
257
8
9
10.2
26
260
8.5
9.5
10.4
26.3
263
9
10
10.5
26.7
267
9.5
10.5
10.6
27
270
10
11
10.7
27.3
273
10.5
11.5
10.9
27.6
276
11
12
11
27.9
279
12
13
11.3
28.6
286
13
14
11.5
29.2
292
(UK to US Conversion) Big kids' Shoe Size
Age
UK Size
US Size
Inches
cm
mm
8-9 years
1
2
8.1 - 8.4
20.7 - 21.3
207-213
9-11 years
1.5
2
8.3 - 8.5
21 - 21.6
210-216
9-11 years
2
3
8.4 - 8.7
21.4 - 22
214-220
10-12 years
2.5
3
8.7 - 8.9
22.1 - 22.7
221-227
10-12 years
3
3.5
8.8 - 9.1
22.4 - 23
224-230
10-12 years
3.5
4
9 - 9.2
22.8 - 23.4
228-234
11-13 years
4
4.5
9.1 - 13.3
23.1 - 23.7
231-237
11-13 years
4.5
5
9.3 - 9.5
23.5 - 24.1
235-241
12-14 years
5
5.5
9.4 - 9.6
23.8 - 24.5
238-245
12-14 years
5.5
6
9.5 - 9.8
24.2 - 24.8
242-248
13-15 years
6
6.5
9.6 - 9.9
24.5 - 25.1
245-251
13-15 years
6.5
7
9.8 - 10
24.9 - 25.5
249-255
16 years +
7
7.5
10 - 10.2
25.3 - 25.9
253-259
16 years +
7.5
8
10.1 - 10.3
25.6 - 26.2
256-262
16 years +
8
8.5
10.2 - 10.4
25.9 - 26.5
259-265
16 years +
8.5
9
10.4 - 10.6
26.3 - 26.9
263-269
16 years +
9
9.5
10.5 - 10.7
26.7 - 27.3
267-273
16 years +
9.5
10
10.6 - 10.9
27 - 27.6
270-276
(UK to US Conversion) Young kids' Shoe Size
Age
UK Size
US Size
Inches
cm
mm
3 years
8
9
6 - 6.3
15.3 - 15.9
153-159
3-4 years
8.5
9.5
6.3 - 6.5
16 - 16.6
160-166
4-6 years
9
10
6.6 - 6.8
16.7 - 17.2
167-172
5-7 years
9.5
10
6.7 - 6.9
17 - 17.6
170-176
5-7 years
10
11
6.8 - 7
17.3 - 17.9
173-179
6-8 years
10.5
11
6.9 - 7.2
17.6 - 18.2
176-182
6-8 years
11
12
7.1 - 7.3
18 - 18.5
180-185
6-8 years
11.5
12
7.2 - 7.4
18.3 - 18.9
183-189
6-8 years
12
13
7.3 - 7.6
18.6 - 19.2
186-192
8-9 years
12.5
13
7.6 - 7.8
19.3 - 19.9
193-199
8-9 years
13
1
7.9 - 8.1
20 - 20.6
200-206
8-10 years
13.5
1
8 - 8.2
20.3 - 20.9
203-209
8-10 years
1
2
8.1 - 8.4
20.7 - 21.3
207-213
9-11 years
1.5
2
8.3 - 8.5
21 - 21.6
210-216
9-11 years
2
3
8.4 - 8.7
21.4 - 22
214-220
10-12 years
2.5
3
8.7 - 8.9
22.1 - 22.7
221-227
10-12 years
3
3.5
8.8 - 9.1
22.4 - 23
224-230
10-12 years
3.5
4
9 - 9.2
22.8 - 23.4
228-234
11-13 years
4
4.5
9.1 - 9.3
23.1 - 23.7
231-237
11-13 years
4.5
5
9.3 - 9.5
23.5 - 24.1
235-241
(UK to US Conversion) Toddlers' Shoe Size
Age
UK Size
US Size
Inches
cm
mm
18-24 months
5
6
5.2 - 5.5
13.3 - 13.9
133-139
2 years
6
7
5.5 - 5.7
14 - 14.5
140-145
2-3 years
7
8
5.7 - 6
14.6 - 15.2
146-152
2-3 years
7.5
8
5.9 - 6.1
14.9 - 15.5
149-155
3 years
8
9
6 - 6.3
15.3 - 15.9
153-159
3-4 years
8.5
9.5
6.3 - 6.5
16 - 16.6
160-166
4-6 years
9
10
6.6 - 6.8
16.7 - 17.2
167-172
5-7 years
9.5
10
6.7 - 6.9
17 - 17.6
170-176
5-7 years
10
11
6.8 - 7
17.3 - 17.9
173-179
6-8 years
10.5
11
6.9 - 7.2
17.6 - 18.2
176-182
6-8 years
11
12
7.1 - 7.3
18 - 18.5
180-185
6-8 years
11.5
12
7.2 - 7.4
18.3 - 18.9
183-189
6-8 years
12
13
7.3 - 7.6
18.6 - 19.2
186-192
8-9 years
12.5
13
7.6 - 7.8
19.3 - 19.9
193-199
(UK to US Conversion) Baby's Shoe Size
Age
UK Size
US Size
Inches
cm
mm
0-1 months
-
-
3.3 - 3.5
8.4 - 9
84-90
0-3 months
0
-
3.6 - 3.9
9.1 - 9.8
91-98
3-6 months
1
2
3.9 - 4.1
9.9 - 10.4
99-104
6-9 months
2
3
4.1 - 4.4
10.5 - 11.1
105-111
6-9 months
3
4
4.4 - 4.6
11.2 - 11.8
112-118
9-12 months
4
5
4.7 - 4.9
11.9 - 12.5
119-125
12-18 months
4.5
6
5 - 5.2
12.6 - 13.2
126-132
18-24 months
5
7
5.2 - 5.5
13.3 - 13.9
133-139
2 years
6
8
5.5 - 5.7
14 - 14.5
140-145
Since the shoe standards of different regions and different manufacturers are different, the above size conversion chart can only be used as a reference
