Shoe size for a 21 cm foot
A 21 cm foot (210 mm, 8.27 in) is a men’s US 3, a women’s US 4.5, UK 2 and EU 33.5.
In Mondopoint and Japanese sizes that’s Mondopoint 210 and Japan 21. For kids it’s a kids’ US 3Y, a little kid size.
Try another length
Every size system for a 21 cm foot
| System | Men’s | Women’s | Kids |
|---|---|---|---|
| US | 3 | 4.5 | 3Y |
| UK | 2 | 2 | 2 |
| EU | 33.5 | 33.5 | 33.5 |
| Mondopoint (mm) | 210 | 210 | 210 |
| Japan (cm) | 21 | 21 | 21 |
| India (UK sizes) | 2 | 2 | 2 |
| Australia and NZ | 2 | 4.5 | 2 |
| South Korea (mm) | 210 | 210 | 210 |
| China (mm) | 210 | 210 | 210 |
| Mexico (cm) | 21 | 21 | 21 |
| Brazil | 32 | 32 | 32 |
| Argentina, Uruguay, Paraguay | 33 | 33 | 33 |
From the standard size tables, rounded up to the next size when the foot is between two. A dash means the system has no size this long or short.
Where a 21 cm foot falls
Each size fits feet longer than the size below it, up to its own length. Your size is the first one long enough; the room left is how far the foot is from the top of that size.
EU
| Size | Fits feet over | Up to |
|---|---|---|
| 32.5 | 20.0 cm | 20.3 cm |
| 33 | 20.3 cm | 20.7 cm |
| 33.5 (this foot) | 20.7 cm | 21.0 cm |
| 34 | 21.0 cm | 21.3 cm |
| 34.5 | 21.3 cm | 21.7 cm |
UK
| Size | Fits feet over | Up to |
|---|---|---|
| 1.5 | 20.3 cm | 20.7 cm |
| 2 (this foot) | 20.7 cm | 21.2 cm |
| 2.5 | 21.2 cm | 21.6 cm |
| 3 | 21.6 cm | 22.0 cm |
Room left in UK 2: 1.7 mm
Japan
| Size | Fits feet over | Up to |
|---|---|---|
| 20 | 19.5 cm | 20.0 cm |
| 20.5 | 20.0 cm | 20.5 cm |
| 21 (this foot) | 20.5 cm | 21.0 cm |
| 21.5 | 21.0 cm | 21.5 cm |
| 22 | 21.5 cm | 22.0 cm |
How common is a 21 cm foot?
In the US Army’s 2012 ANSUR II survey, which measured adults’ feet to the millimetre, 100% of men (4,082 of 4,082) and 100% of women (1,985 of 1,986) had a foot at least this long.
Survey of US Army personnel, so not every population; see average shoe size for the whole spread.
A 21 cm foot in 31 brands
Brands don’t agree at this length: their own charts put a 21 cm foot anywhere from men’s US 3 (Converse, Crocs, New Balance and 2 more) to US 4 (Dr. Martens and HEYDUDE). Check the brand you’re buying below.
Room in the shoe: of the 13 brands that give foot lengths, Dr. Martens leaves the most, 10.0 mm. Three brands’ sizes end exactly at 21 cm, so a foot any longer needs another size: Crocs US 4 (to 22.0 cm), Liberty US 3 (to 21.7 cm) and New Balance US 3.5 (to 21.5 cm).
| Brand | Men’s | Women’s | Kids |
|---|---|---|---|
| adidas size chart (opens the brand’s site) | — | — | US 3EU 35 · UK 2.5adidas’ chart: foot up to 21.2 cm · 2.0 mm to spare |
| ANTA size chart (opens the brand’s site) | — | — | US 2.5YEU 34 · UK 2ANTA’s chart: foot up to 21.5 cm · 5.0 mm to spare |
| ASICS size chart (opens the brand’s site) | — | — | US 2EU 33.5 · UK 1From the standard EU 33.5 |
| Bata size chart (opens the brand’s site) | — | EU 34UK 2From the standard UK 2 | — |
| Birkenstock size chart (opens the brand’s site) | — | — | EU 33UK 1 · US 2-2.5Birkenstock’s chart: foot up to 21.0 cm · no room to spare |
| Campus size chart (opens the brand’s site) | — | — | UK 2EU 34 · US 3Campus’ chart: foot up to 21.3 cm · 3.0 mm to spare |
| Clarks size chart (opens the brand’s site) | — | — | UK 2EU 34 · US 2.5Clarks’ chart: foot up to 21.0 cm · no room to spare |
| Converse size chart (opens the brand’s site) | US 3EU 35From the standard US 3 | — | US 3YEU 35 · UK 2.5From the standard US 3Y |
| Crocs size chart (opens the brand’s site) | M3/W5EU 34-35 · UK 2 · US 3Crocs’ chart: foot up to 21.0 cm · no room to spare | US 5EU 34-35 · UK 3Crocs’ chart: foot up to 21.0 cm · no room to spare | US J3EU 31-32 · UK 3Crocs’ chart: foot up to 21.7 cm · 7.0 mm to spare |
| Dr. Martens size chart (opens the brand’s site) | UK 3EU 36 · US 4Dr. Martens’ chart: foot up to 22.0 cm · 10.0 mm to spare | UK 3EU 36 · US 5Dr. Martens’ chart: foot up to 22.0 cm · 10.0 mm to spare | UK 1.5EU 33.5 · US 2.5From the standard EU 33.5 |
| Fila size chart (opens the brand’s site) | — | UK 3EU 36 · US 4Fila’s chart: foot up to 22.0 cm · 10.0 mm to spare | US 2EU 33.5 · UK 1From the standard EU 33.5 |
| HEYDUDE size chart (opens the brand’s site) | US 4EU 37HEYDUDE’s chart: foot up to 22.0 cm · 10.0 mm to spare | US 4EU 35HEYDUDE’s chart: foot up to 21.0 cm · no room to spare | — |
| Jordan size chart (opens the brand’s site) | — | US 4EU 34.5 · UK 1.5Jordan’s chart: foot up to 21.2 cm · 2.0 mm to spare | US 2.5YEU 34 · UK 2Jordan’s chart: foot up to 21.4 cm · rounded up · 4.0 mm to spare |
| KEEN size chart (opens the brand’s site) | — | US 5EU 35 · UK 2.5KEEN’s chart: foot up to 21.6 cm · 6.0 mm to spare | US 3EU 35 · UK 2KEEN’s chart: foot up to 21.6 cm · 6.0 mm to spare |
| Liberty size chart (opens the brand’s site) | — | UK 1EU 33 · US 2Liberty’s chart: foot up to 21.0 cm · no room to spare | — |
| Merrell size chart (opens the brand’s site) | — | — | US 2EU 33.5 · UK 1Merrell’s chart: foot up to 21.0 cm · no room to spare |
| New Balance size chart (opens the brand’s site) | US 3EU 35 · UK 2.5New Balance’s chart: foot up to 21.0 cm · no room to spare | US 4EU 34 · UK 2New Balance’s chart: foot up to 21.0 cm · no room to spare | US 3EU 35 · UK 2.5New Balance’s chart: foot up to 21.0 cm · no room to spare |
| Nike size chart (opens the brand’s site) | — | US 4EU 34.5 · UK 1.5Nike’s chart: foot up to 21.2 cm · 2.0 mm to spare | US 2.5YEU 34 · UK 2Nike’s chart: foot up to 21.4 cm · rounded up · 4.0 mm to spare |
| On size chart (opens the brand’s site) | — | — | US 3KEU 35 · UK 2.5KOn’s chart: foot up to 21.4 cm · rounded up · 4.0 mm to spare |
| Onitsuka Tiger size chart (opens the brand’s site) | US 3EU 35 · UK 2From the standard UK 2 | US 4HEU 35 · UK 2From the standard US 4.5 | US 2EU 33.5 · UK 1From the standard EU 33.5 |
| Red Tape size chart (opens the brand’s site) | — | UK 2EU 35 · US 4From the standard UK 2 | — |
| Reebok size chart (opens the brand’s site) | — | US 4.5Reebok’s chart: foot up to 21.1 cm · 0.8 mm to spare | — |
| Salomon size chart (opens the brand’s site) | — | US 5EU 36 · UK 3.5Salomon’s chart: foot up to 21.5 cm · 5.0 mm to spare | EU 34UK 2 · US 2Salomon’s chart: foot up to 21.0 cm · no room to spare |
| Saucony size chart (opens the brand’s site) | — | — | 2 Big KidsEU 33.5 · UK 1 · US 2Saucony’s chart: foot up to 21.9 cm · 9.1 mm to spare |
| Skechers size chart (opens the brand’s site) | — | US 5EU 35 · UK 2From the standard UK 2 | — |
| SOREL size chart (opens the brand’s site) | — | — | US 3EU 34 · UK 2SOREL’s chart: foot up to 21.3 cm · 3.0 mm to spare |
| Timberland size chart (opens the brand’s site) | — | — | US 2.5EU 34.5 · UK 2Timberland’s chart: foot up to 21.0 cm · no room to spare |
| UGG size chart (opens the brand’s site) | US 3EU 36 · UK 2UGG’s chart: foot up to 21.1 cm · 0.8 mm to spare | — | US 3KEU 35 · UK 2UGG’s chart: foot up to 21.8 cm · rounded up · 8.1 mm to spare |
| Under Armour size chart (opens the brand’s site) | — | — | US 2EU 33.5 · UK 1.5Under Armour’s chart: foot up to 21.0 cm · no room to spare |
| Vans size chart (opens the brand’s site) | EU 34.5UK 2.5Vans’ chart: foot up to 21.5 cm · 5.0 mm to spare | EU 34.5UK 2.5 · US 5Vans’ chart: foot up to 21.5 cm · 5.0 mm to spare | US 3YEU 34 · UK 2.5Vans’ chart: foot up to 21.0 cm · no room to spare |
| Woodland size chart (opens the brand’s site) | — | UK 2EU 35 · US 4From the standard UK 2 | — |
Sizes as each brand prints them on its own chart, linked. Not affiliated with any brand.
Size tables checked 2026-10-23; brand sizes from each brand’s own chart, linked above. An estimate to help you choose: fit varies by brand and model. Not medical advice.