Under Armour Shoe Size Chart

Under Armour's own published size chart, matched to real measured foot length. Measure your foot once and read your Under Armour size directly from the table below — or use the shoe size calculator to do it for you and compare against 34 other brands.

Under Armour men's size chart

Foot length (cm)	US	UK	EU	JP
22	4	3	37	22
22.5	4.5	3.5	37.5	22.5
23	5	4	38	23
23.5	5.5	4.5	38.5	23.5
24	6	5	39	24
24.5	6.5	5.5	39.5	24.5
25	7	6	40	25
25.5	7.5	6.5	40.5	25.5
26	8	7	41	26
26.5	8.5	7.5	42	26.5
27	9	8	42.5	27
27.5	9.5	8.5	43	27.5
28	10	9	44	28
28.5	10.5	9.5	44.5	28.5
29	11	10	45	29
29.5	11.5	10.5	45.5	29.5
30	12	11	46	30
30.5	12.5	11.5	46.5	30.5
31	13	12	47	31
31.5	13.5	12.5	47.5	31.5
32	14	13	48	32
32.5	14.5	13.5	48.5	32.5
33	15	14	49	33
33.5	15.5	14.5	49.5	33.5
34	16	15	50	34
34.5	16.5	15.5	50.5	34.5

Under Armour women's size chart

Foot length (cm)	US	UK	EU	JP
22	5.5	4.5	37	22
22.5	6	5	37.5	22.5
23	6.5	5.5	38	23
23.5	7	6	38.5	23.5
24	7.5	6.5	39	24
24.5	8	7	39.5	24.5
25	8.5	7.5	40	25
25.5	9	8	40.5	25.5
26	9.5	8.5	41	26
26.5	10	9	42	26.5
27	10.5	9.5	42.5	27
27.5	11	10	43	27.5
28	11.5	10.5	44	28
28.5	12	11	44.5	28.5
29	12.5	11.5	45	29
29.5	13	12	45.5	29.5
30	13.5	12.5	46	30
30.5	14	13	46.5	30.5
31	14.5	13.5	47	31
31.5	15	14	47.5	31.5
32	15.5	14.5	48	32
32.5	16	15	48.5	32.5
33	16.5	15.5	49	33
33.5	17	16	49.5	33.5
34	17.5	16.5	50	34
34.5	18	17	50.5	34.5

Under Armour kids' size chart

Foot length (cm)	US	UK	EU	JP
8	2K	1.5	17.5	8
9	3K	2.5	18.5	9
10	4K	3.5	19.5	10
11	5K	4.5	21	11
12	6K	5.5	22	12
13	7K	6.5	23.5	13
14	8K	7.5	25	14
15	9K	8.5	26	15
16	10K	9.5	27	16
16.5	10.5K	10	27.5	16.5
17	11K	10.5	28	17
17.5	11.5K	11	29	17.5
18	12K	11.5	29.5	18
18.5	12.5K	12	30	18.5
19	13K	12.5	31	19
19.5	13.5K	13	31.5	19.5
20	1Y	13.5	32	20
20.5	1.5Y	1	33	20.5
21	2Y	1.5	33.5	21
21.5	2.5Y	2	34	21.5
22	3Y	2.5	35	22
22.5	3.5Y	3	35.5	22.5
23	4Y	3.5	36	23
23.5	4.5Y	4	36.5	23.5
24	5Y	4.5	37.5	24
24.5	5.5Y	5	38	24.5
25	6Y	5.5	38.5	25
25.5	6.5Y	6	39	25.5
26	7Y	6	40	26

How to measure for Under Armour

Measure heel-to-toe standing, using the longer foot.

Under Armour fit guidance

Under Armour athletic footwear generally runs true to size. If you are between sizes, sizing up is the more common recommendation for running and training models. Under Armour's children's range is unusually complete, running from an 8cm infant foot to 26cm — their largest youth size, 7Y, fits the same 26cm foot as a men's 7. Sizes carry a K suffix up to 13.5K before restarting at 1Y. Under Armour's own note is worth heeding: because of metric-to-imperial rounding, two US sizes sometimes share one UK size, so match on foot length rather than converting between size numbers.

Where this data comes from

Sizing information reviewed September 2026. Manufacturers revise their charts from time to time — always confirm against the specific model before buying.

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