Under Armour size guide

Official chart in centimetres: men, women, kids, and baby.

Official source: Under Armour — recorded on October 19, 2026

About this chart

Under Armour publishes its measurements in centimetres (and its shoe sizes in inches too). Sizes are American: SM = S, MD = M, LG = L. Bottoms follow the same waist and hip measurements as tops. The sports bra matrices (band and cup) and socks are not reproduced.

Men

Tops and outerwear

Size	Bust (cm)	Waist (cm)
XS	79–86	71–74
SM	86–94	74–79
MD	94–104	79–86
LG	104–112	86–94
XL	112–122	94–104
XXL	122–132	104–116
3XL	132–142	116–127
4XL	142–152	127–138
5XL	152–163	138–150

Bottoms

Size	Waist (cm)	Hips (cm)
XS	71–74	84–86
SM	74–79	86–91
MD	79–86	91–99
LG	86–94	99–107
XL	94–104	107–117
XXL	104–116	117–127
3XL	116–127	127–137
4XL	127–138	137–147
5XL	138–150	147–157

International conversions

Under Armour	XS	SM	MD	LG	XL	XXL	3XL	4XL	5XL
US	28	30	32–33	34–36	38–40	42–44	46–48	50–52	54–56

Gloves — letter sizes

Size	Palm circumference (cm)	Hand length (cm)
SM	17.8–19.1	17.5–18.1
MD	19.4–20.6	18.4–19.1
M/L	20–21.6	18.7–19.7
LG	21–22.2	19.4–20
XL	22.5–23.8	20.3–21
XXL	24.1–25.4	21.3–21.9

Caps and beanies

In one size (OSFM), caps fit a head circumference of 54.9 to 60.6 cm for men and 53 to 58.7 cm for women.

Size	Head circumference (cm)
S/M	54–57.2
M/L	55.9–59.1
L/XL	57.8–61
XL/XXL	59.7–63.5

Shoes

Size	Foot length (cm)
40	25
40.5	25.5
41	26
42	26.5
42.5	27
43	27.5
44	28
44.5	28.5
45	29
45.5	29.5
46	30
47	30.5
47.5	31
48	31.5
48.5	32
49	32.5
49.5	33
50	33.5
50.5	34

International conversions

Under Armour	40	40.5	41	42	42.5	43	44	44.5	45	45.5	46	47	47.5	48	48.5	49	49.5	50	50.5
UK	6	6.5	7	7.5	8	8.5	9	9.5	10	10.5	11	11.5	12	12.5	13	13.5	14	14.5	15
US men	7	7.5	8	8.5	9	9.5	10	10.5	11	11.5	12	12.5	13	13.5	14	14.5	15	15.5	16

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Women

Tops and outerwear

Size	Bust (cm)	Waist (cm)	Hips (cm)
XXS	79–83	62–65	84–87
XS	83–85	65–68	87–91
SM	85–91	68–74	91–96
MD	91–96	74–79	96–101
LG	96–104	79–86	101–109
XL	104–112	86–94	109–117
XXL	112–119	94–102	117–124
3XL	119–127	102–109	124–132
1X	112–121	99–110	119–128
2X	121–131	110–123	128–138
3X	131–140	123–135	138–147

International conversions

Under Armour	XXS	XS	SM	MD	LG	XL	XXL	3XL	1X	2X	3X
US	00	0–2	4–6	8–10	12–14	16	18	20	16W–18W	20W–22W	24W–26W

Gloves — letter sizes

Size	Palm circumference (cm)	Hand length (cm)
XS	14.6–15.9	15.2–15.9
SM	16.2–17.5	16.2–16.8
MD	17.8–19.1	17.1–17.8
LG	19.4–20.6	18.1–18.7
XL	21–22.2	19.1–19.7

Caps and beanies

In one size (OSFM), caps fit a head circumference of 54.9 to 60.6 cm for men and 53 to 58.7 cm for women.

Size	Head circumference (cm)
S/M	54–57.2
M/L	55.9–59.1
L/XL	57.8–61
XL/XXL	59.7–63.5

Shoes

Under Armour gives the same UK size (6) to EU 39 and 40, and the same foot length to 36.5 and 37.5 (23.5 cm) then to 38 and 38.5 (24 cm): values reproduced as published.

Size	Foot length (cm)
35.5	22.5
36	23
36.5	23.5
37.5	23.5
38	24
38.5	24
39	24.5
40	25
40.5	25.5
41	26
42	26.5
42.5	27
43	27.5
44	28
44.5	28.5

International conversions

Under Armour	35.5	36	36.5	37.5	38	38.5	39	40	40.5	41	42	42.5	43	44	44.5
UK	3	3.5	4	4.5	5	5.5	6	6	6.5	7	7.5	8	8.5	9	9.5
US women	5	5.5	6	6.5	7	7.5	8	8.5	9	9.5	10	10.5	11	11.5	12

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Kids

Little kids, 3 to 7 years

2T and 3T come from the toddler chart, which also gives the weight. The girls' chart stops at 6x (62 to 64 cm chest, 118 to 123 cm) instead of 7.

Size	Age	Height (cm)	Weight (kg)	Bust (cm)	Waist (cm)	Hips (cm)
2T	2 years	84–89	13–15	51–53	52–55	—
3T	3 years	89–97	14–16	52–55	53–56	—
4	4 years	97–104	16–18	55–57	55–57	57–60
5	5 years	104–112	17–19	57–60	56–58	60–62
6	6 years	112–118	—	60–62	57–60	62–65
7	7 years	118–127	—	62–66	58–61	65–67

Boys

Plus sizes (YSM+, YMD+…) are roomier cuts for the same height. The US column gives the US kids' size, close to the age.

Size	Height (cm)	Bust (cm)	Waist (cm)	Hips (cm)
YXS	119–128	63–66	58–61	66–69
YSM	128–135	66–69	61–63	69–71
YSM+	128–135	70–74	69–71	74–77
YMD	135–150	69–74	63–69	71–79
YMD+	135–150	74–79	71–79	77–85
YLG	150–165	74–83	69–76	79–86
YLG+	150–165	79–88	79–86	85–93
YXL	165–178	83–90	76–84	86–94
YXL+	165–178	88–95	86–94	93–100

International conversions

Under Armour	YXS	YSM	YSM+	YMD	YMD+	YLG	YLG+	YXL	YXL+
US	7	8	8+	10–12	10+/12+	14–16	14+/16+	18–20	18+/20+

Girls

Size	Height (cm)	Bust (cm)	Waist (cm)	Hips (cm)
YXS	119–130	63–67	58–61	66–71
YSM	130–135	69–70	61–62	71–74
YSM+	130–135	72–74	69–71	79–81
YMD	135–149	70–77	62–67	74–83
YMD+	135–149	74–83	71–79	81–88
YLG	149–160	77–86	67–77	83–93
YLG+	149–160	83–89	79–88	88–97
YXL	149–160	86–91	77–83	93–98
YXL+	149–160	89–94	88–91	97–100

International conversions

Under Armour	YXS	YSM	YSM+	YMD	YMD+	YLG	YLG+	YXL	YXL+
US	7	8	8+	10–12	10+/12+	14–16	14+/16+	18	18+

Hats

Size	Head circumference (cm)
YSM/YMD	51.1–54
YMD/YLG	53–55.9

Kids' shoes, from baby to junior

Size	Foot length (cm)
16	7
17	8
18.5	9
19.5	10
21	11
22	12
23.5	13
25	14
26	15
27	16
27.5	16.5
28	17
29	17.5
29.5	18
30	18.5
31	19
31.5	19.5
32	20
33	20.5
33.5	21
34	21.5
35	22
35.5	22.5
36	23
36.5	23.5
37.5	23.5
38	24
38.5	24
39	24.5
40	25

International conversions

Under Armour	16	17	18.5	19.5	21	22	23.5	25	26	27	27.5	28	29	29.5	30	31	31.5	32	33	33.5	34	35	35.5	36	36.5	37.5	38	38.5	39	40
US	1K	2K	3K	4K	5K	6K	7K	8K	9K	10K	10.5K	11K	11.5K	12K	12.5K	13K	13.5K	1	1.5	2	2.5	3	3.5	4	4.5	5	5.5	6	6.5	7
UK	0.5	1.5	2.5	3.5	4.5	5.5	6.5	7.5	8.5	9.5	10	10.5	11	11.5	12	12.5	13	13.5	1	1.5	2	2.5	3	3.5	4	4.5	5	5.5	6	6

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Baby

Size	Age	Height (cm)	Weight (kg)	Bust (cm)
0-3M	0–3 months	52–61	3–6	39–43
3-6M	3–6 months	61–69	6–7	43–46
6-9M	6–9 months	69–74	7–9	46–47
12M	12 months	74–77	8–10	47–48
18M	18 months	77–84	10–12	48–51
24M	24 months	84–89	12–14	51–53

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