UGG size chart

UGG’s own size charts cover men’s 3–18, women’s 5–15, unisex 3–18, infant 0–6/7, toddler 3T–12T, big kid 8T–6K, plus charts for socks.

UGG runs large in men’s shoes, against 23 other brands’ charts: size for size, its chart is made for a longer foot than another brand’s 52% of the time, about the same (within 2.5 mm) 36% and a shorter one 12%, typically by half a size. Go about half a size down from the size you wear in most brands, or size from your foot length on its chart.

UGG’s charts at a glance

Chart	Sizes	Foot lengths
Men’s	3–18	21.1–36.1 cm
Women’s	5–15	22.1–32.0 cm
Unisex	3–18	21.1–33.5 cm
Infant	0–6/7	8.3–14.4 cm
Toddler	3T–12T	10.8–18.4 cm
Big kid	8T–6K	15.05–24.35 cm
Men’s socks	One Size Fits Most–L/XL	—
Women’s socks	One Size Fits Most–L/XL	—

Does UGG run big or small?

From UGG’s own foot lengths: first against the other brands’ charts, size for size (whether a US size is made for a longer or shorter foot than theirs), then against the standard size tables, foot by foot. Brands measure differently (Nike’s chart, for one, prints a box size in centimetres beside the foot length and says the two differ), so this is what each chart advises, not a fit test.

Men’s

Against the standard size tables, UGG’s chart gives a US size half a size to a size smaller for 11 of 13 foot lengths from 24.0 to 30.0 cm: its sizes allow a longer foot than the standard ones.

For example, UGG’s men’s US 9 is for a foot up to 26.9 cm (the standard US 9: 26.25 cm). The other 23 brands’ charts make it for a foot from 26.0 to 27.7 cm: 11 for a shorter foot than UGG’s, 10 for about the same (within 1 mm) and 2 for a longer one.

Charts that size like UGG’s: Saucony, Timberland, Vans, Liberty, Dr. Martens, Fila, New Balance, Zara, Crocs and Under Armour. Charts that size like the standard tables: Nike, adidas, HEYDUDE, KEEN, SOREL, HOKA, ANTA, Clarks and Reebok.

Foot by foot

Foot	Standard US	UGG US
24.0 cm	6.5	6.5
24.5 cm	7	7
25.0 cm	8	7.5
25.5 cm	8.5	8
26.0 cm	9	8.5
26.5 cm	9.5	9
27.0 cm	10	9.5
27.5 cm	10.5	10
28.0 cm	11.5	10.5
28.5 cm	12	11
29.0 cm	12.5	11.5
29.5 cm	13	12
30.0 cm	13.5	13

Women’s

UGG runs large in women’s shoes, against 21 other brands’ charts: size for size, its chart is made for a longer foot than another brand’s 60% of the time, about the same (within 2.5 mm) 35% and a shorter one 5%, typically by half a size. Go about half a size down from the size you wear in most brands, or size from your foot length on its chart.

Against the standard size tables, UGG’s chart gives a US size half a size to a size smaller for 12 of 12 foot lengths from 22.0 to 27.5 cm: its sizes allow a longer foot than the standard ones.

For example, UGG’s women’s US 8 is for a foot up to 24.9 cm (the standard US 8: 24.1 cm). The other 21 brands’ charts make it for a foot from 24.0 to 25.3 cm: 15 for a shorter foot than UGG’s, 1 for about the same (within 1 mm) and 5 for a longer one.

Charts that size like UGG’s: Saucony, Timberland, Vans, Dr. Martens, New Balance, Teva, Zara, Golden Goose and Under Armour. Charts that size like the standard tables: KEEN, Clarks, Crocs and Reebok.

Foot by foot

Foot	Standard US	UGG US
22.0 cm	5.5	5
22.5 cm	6.5	5.5
23.0 cm	7	6
23.5 cm	7.5	6.5
24.0 cm	8	7
24.5 cm	8.5	7.5
25.0 cm	9.5	8.5
25.5 cm	10	9
26.0 cm	10.5	9.5
26.5 cm	11	10
27.0 cm	11.5	10.5
27.5 cm	12	11

UGG men’s size chart

US	UK	EU	JP	MX	CN	Foot
3	2	36	21	21	210	21.1 cm8.3 in
4	3	37	22	22	220	22.1 cm8.7 in
4.5	3.5	37.5	22.5	22.5	225	22.6 cm8.9 in
5	4	38	23	23	230	23.1 cm9.1 in
5.5	4.5	38.5	23.5	23.5	235	23.6 cm9.3 in
6	5	39	24	24	240	23.9 cm9.4 in
6.5	5.5	39.5	24.5	24.5	245	24.4 cm9.6 in
7	6	40	25	25	250	24.9 cm9.8 in
7.5	6.5	40.5	25.5	25.5	255	25.4 cm10.0 in
8	7	41	26	26	260	25.9 cm10.2 in
8.5	7.5	41.5	26.5	26.5	265	26.4 cm10.4 in
9	8	42	27	27	270	26.9 cm10.6 in
9.5	8.5	42.5	27.5	27.5	275	27.4 cm10.8 in
10	9	43	28	28	280	27.9 cm11.0 in
10.5	9.5	43.5	28.5	28.5	285	28.45 cm11.2 in
11	10	44	29	29	290	29.0 cm11.4 in
11.5	10.5	44.5	29.5	29.5	295	29.5 cm11.6 in
12	11	45	30	30	300	30.0 cm11.8 in
13	12	46	31	31	310	31.0 cm12.2 in
14	13	48.5	32	32	320	32.0 cm12.6 in
15	14	49.5	33	33	330	33.0 cm13.0 in
16	15	50.5	34	34	340	34.0 cm13.4 in
17	16	51	35	35	350	35.05 cm13.8 in
18	17	52	36	36	360	36.1 cm14.2 in

As printed on UGG’s chart on ugg.com (checked 2026-10-21). Foot is the foot length the brand gives for the size (the top of the range where it prints one).

UGG women’s size chart

US	UK	EU	JP	MX	CN	Foot
5	3	36	22	22	220	22.1 cm8.7 in
5.5	3.5	36.5	22.5	22.5	225	22.6 cm8.9 in
6	4	37	23	23	230	23.1 cm9.1 in
6.5	4.5	37.5	23.5	23.5	235	23.6 cm9.3 in
7	5	38	24	24	240	24.1 cm9.5 in
7.5	5.5	38.5	24.5	24.5	245	24.6 cm9.7 in
8	6	39	25	25	250	24.9 cm9.8 in
8.5	6.5	39.5	25.5	25.5	255	25.4 cm10.0 in
9	7	40	26	26	260	25.9 cm10.2 in
9.5	7.5	40.5	26.5	26.5	265	26.4 cm10.4 in
10	8	41	27	27	270	26.9 cm10.6 in
10.5	8.5	41.5	27.5	27.5	275	27.4 cm10.8 in
11	9	42	28	28	280	27.9 cm11.0 in
11.5	9.5	42.5	28.5	28.5	285	28.45 cm11.2 in
12	10	43	29	29	290	29.0 cm11.4 in
13	11	44	30	30	300	30.0 cm11.8 in
14	12	45	31	31	310	31.0 cm12.2 in
15	13	48	32	32	320	32.0 cm12.6 in

As printed on UGG’s chart on ugg.com (checked 2026-10-21). Foot is the foot length the brand gives for the size (the top of the range where it prints one).

UGG unisex size chart

US	UK	EU	JP	MX	CN	Foot
3	2	34.5	21	21	210	21.1 cm8.3 in
4	3	36	22	22	220	22.1 cm8.7 in
4.5	3.5	36.5	22.5	22.5	225	22.6 cm8.9 in
5	4	37	23	23	230	23.1 cm9.1 in
5.5	4.5	37.5	23.5	23.5	235	23.6 cm9.3 in
6	5	38	24	24	240	24.1 cm9.5 in
6.5	5.5	38.5	24.5	24.5	245	24.6 cm9.7 in
7	6	39.5	25	25	250	24.9 cm9.8 in
7.5	6.5	40	25.5	25.5	255	25.4 cm10.0 in
8	7	40.5	26	26	260	25.9 cm10.2 in
8.5	7.5	41	26.5	26.5	265	26.4 cm10.4 in
9	8	42	27	27	270	26.9 cm10.6 in
9.5	8.5	42.5	27.5	27.5	275	27.4 cm10.8 in
10	9	43	28	28	280	27.9 cm11.0 in
10.5	9.5	43.5	28.5	28.5	285	28.45 cm11.2 in
11	10	44	29	29	290	29.0 cm11.4 in
11.5	10.5	44.5	29.5	29.5	295	29.5 cm11.6 in
12	11	45.5	30	30	300	30.0 cm11.8 in
13	12	47	31	31	310	31.0 cm12.2 in
14	13	48.5	31.5	31.5	315	31.5 cm12.4 in
15	14	50	32	32	320	32.0 cm12.6 in
16	15	50.5	32.5	32.5	325	32.5 cm12.8 in
17	16	51	33	33	330	33.0 cm13.0 in
18	17	52	33.5	33.5	335	33.5 cm13.2 in

As printed on UGG’s chart on ugg.com (checked 2026-10-21). Foot is the foot length the brand gives for the size (the top of the range where it prints one).

UGG infant size chart

US	UK	EU	JP	MX	CN	Foot
0	—	15	8	8	80	8.3 cm3.3 in
1	0.0	15	9	9	90	9.2 cm3.6 in
0/1	0.5	16	9	9	90	9.3 cm3.6 in
2	1.0	17	10	10	100	10.0 cm3.9 in
3	2.5	18.5	11	11	110	10.85 cm4.3 in
2/3	2	18	11	11	110	11.0 cm4.3 in
4	3.5	19.5	11.5	11.5	115	11.7 cm4.6 in
5	4.5	21.0	12.5	12.5	125	12.55 cm4.9 in
4/5	4	20.5	12.5	12.5	125	12.7 cm4.9 in
6	5.0	22.0	13.5	13.5	135	13.4 cm5.3 in
6/7	6	23.5	14.5	14.5	145	14.4 cm5.6 in

As printed on UGG’s chart on ugg.com (checked 2026-10-21). Foot is the foot length the brand gives for the size (the top of the range where it prints one).

UGG toddler size chart

US	UK	EU	JP	MX	CN	Foot
3T	2.5	18.5	11	11	110	10.8 cm4.3 in
4T	3.5	19.5	11.5	11.5	115	11.7 cm4.6 in
5T	4.5	21	12.5	12.5	125	12.5 cm4.9 in
6T	5	22	13.5	13.5	135	13.35 cm5.3 in
7T	6	23.5	14.5	14.5	145	14.2 cm5.6 in
8T	7	25	15	15	150	15.05 cm5.9 in
9T	8	26	16	16	160	15.9 cm6.3 in
10T	9	27.5	17	17	170	16.7 cm6.6 in
11T	10	28.5	17.5	17.5	175	17.6 cm6.9 in
12T	11	30	18.5	18.5	185	18.4 cm7.3 in

As printed on UGG’s chart on ugg.com (checked 2026-10-21). Foot is the foot length the brand gives for the size (the top of the range where it prints one).

UGG big kid size chart

US	UK	EU	JP	MX	CN	Foot
8T	7	25	15	15	150	15.05 cm5.9 in
9T	8	26	16	16	160	15.9 cm6.3 in
10T	9	27.5	17	17	170	16.7 cm6.6 in
11T	10	28.5	17.5	17.5	175	17.6 cm6.9 in
12T	11	30	18.5	18.5	185	18.4 cm7.3 in
13K	12	31	19.5	19.5	195	19.3 cm7.6 in
1K	13	32.5	20	20	200	20.1 cm7.9 in
2K	1	33.5	21	21	210	21.0 cm8.3 in
3K	2	35	22	22	220	21.8 cm8.6 in
4K	3	36	22.5	22.5	225	22.7 cm8.9 in
5K	4	37	23.5	23.5	235	23.5 cm9.3 in
6K	5	38	24.5	24.5	245	24.35 cm9.6 in

As printed on UGG’s chart on ugg.com (checked 2026-10-21). Foot is the foot length the brand gives for the size (the top of the range where it prints one).

UGG men’s socks size chart

Size	US	UK	EU	JP
One Size Fits Most	8-12.5	7-11.5	40-46.5	26-30
M/L	7-10	6-9	39.5-43	25-28
L/XL	10.5-13.5	9.5-12.5	44-47.5	28.5-31

As printed on UGG’s chart on ugg.com (checked 2026-10-21).

UGG women’s socks size chart

Size	US	UK	EU	JP
One Size Fits Most	5-10	3.5-8.5	36-41	22-27
M/L	5.5-8.5	4-7	36.5-39.5	22.5-25.5
L/XL	9-12	7.5-10.5	40-43	26-29.5

As printed on UGG’s chart on ugg.com (checked 2026-10-21).

Find your UGG size from your foot length

shoesize.app is not affiliated with UGG. UGG’s name is used only to identify its own size charts, linked above. An estimate to help you choose: fit varies by model. Not medical advice.