Under Armour Size Chart
Under Armour makes athletic footwear, apparel and accessories for men, women and kids. Checked against Under Armour's own pages on 2026-10-24.
Under Armour official size charts
| US Men | UK | EU | CM | Inches |
|---|---|---|---|---|
| 7 | 6 | 40 | 25 | 9¹¹/₁₆ |
| 7.5 | 6.5 | 40.5 | 25.5 | 9¾ |
| 8 | 7 | 41 | 26 | 9¹⁵/₁₆ |
| 8.5 | 7.5 | 42 | 26.5 | 10¹/₁₆ |
| 9 | 8 | 42.5 | 27 | 10¼ |
| 9.5 | 8.5 | 43 | 27.5 | 10⁷⁄₁₆ |
| 10 | 9 | 44 | 28 | 10⁹⁄₁₆ |
| 10.5 | 9.5 | 44.5 | 28.5 | 10¾ |
| 11 | 10 | 45 | 29 | 10¹⁵⁄₁₆ |
| 11.5 | 10.5 | 45.5 | 29.5 | 11¹⁄₁₆ |
| 12 | 11 | 46 | 30 | 11¼ |
| 12.5 | 11.5 | 47 | 30.5 | 11½ |
| 13 | 12 | 47.5 | 31 | 11¹¹⁄₁₆ |
| 13.5 | 12.5 | 48 | 31.5 | 11¾ |
| 14 | 13 | 48.5 | 32 | 12 |
| 14.5 | 13.5 | 49 | 32.5 | 12³⁄₁₆ |
| 15 | 14 | 49.5 | 33 | 12¼ |
| 15.5 | 14.5 | 50 | 33.5 | 13⅛ |
| 16 | 15 | 50.5 | 34 | 13¼ |
Inches and CM are foot length: the guide measures the foot heel to toe in centimetres and translates that into sizes. Brand column 'Euro' = EU. Inch values are copied as printed (with fraction characters).
Source: www.underarmour.com/en-us/t/size-guide/mens-footwear/
| US Women | UK | EU | CM | Inches |
|---|---|---|---|---|
| 5 | 3 | 35.5 | 22.5 | 8½ |
| 5.5 | 3.5 | 36 | 23 | 8¹³/₁₆ |
| 6 | 4 | 36.5 | 23.5 | 8¹⁵/₁₆ |
| 6.5 | 4.5 | 37.5 | 23.5 | 9¹/₁₆ |
| 7 | 5 | 38 | 24 | 9¼ |
| 7.5 | 5.5 | 38.5 | 24 | 9⁷⁄₁₆ |
| 8 | 6 | 39 | 24.5 | 9½ |
| 8.5 | 6 | 40 | 25 | 9¹¹/₁₆ |
| 9 | 6.5 | 40.5 | 25.5 | 9¾ |
| 9.5 | 7 | 41 | 26 | 9¹⁵/₁₆ |
| 10 | 7.5 | 42 | 26.5 | 10¹/₁₆ |
| 10.5 | 8 | 42.5 | 27 | 10¼ |
| 11 | 8.5 | 43 | 27.5 | 10⁷⁄₁₆ |
| 11.5 | 9 | 44 | 28 | 10⁹⁄₁₆ |
| 12 | 9.5 | 44.5 | 28.5 | 10¹⁵/₁₆ |
Inches and CM are foot length: the guide measures the foot heel to toe in centimetres and translates that into sizes. Brand column 'Euro' = EU. Inch values are copied as printed (with fraction characters). The brand notes that metric/imperial rounding means two US sizes can share one UK or CM size (e.g. 6 and 6.5 are both 23.5 cm).
Source: www.underarmour.com/en-us/t/size-guide/womens-footwear/
| US | US Women | UK | EU | CM | Inches |
|---|---|---|---|---|---|
| 1K | - | 0.5 | 16 | 7 | 2¾ |
| 2K | - | 1.5 | 17 | 8 | 3⁵⁄₃₂ |
| 3K | - | 2.5 | 18.5 | 9 | 3³⁵⁄₆₄ |
| 4K | - | 3.5 | 19.5 | 10 | 3¹⁵⁄₁₆ |
| 5K | - | 4.5 | 21 | 11 | 4¹⁵⁄₁₆ |
| 6K | - | 5.5 | 22 | 12 | 5¼ |
| 7K | - | 6.5 | 23.5 | 13 | 5¾ |
| 8K | - | 7.5 | 25 | 14 | 5¹⁵⁄₁₆ |
| 9K | - | 8.5 | 26 | 15 | 6¼ |
| 10K | - | 9.5 | 27 | 16 | 6⁹⁄₁₆ |
| 10.5K | - | 10 | 27.5 | 16.5 | 6¾ |
| 11K | - | 10.5 | 28 | 17 | 6¹⁵⁄₁₆ |
| 11.5K | - | 11 | 29 | 17.5 | 7¹⁄₁₆ |
| 12K | - | 11.5 | 29.5 | 18 | 7¼ |
| 12.5K | - | 12 | 30 | 18.5 | 7⁷⁄₁₆ |
| 13K | - | 12.5 | 31 | 19 | 7⁹⁄₁₆ |
| 13.5K | - | 13 | 31.5 | 19.5 | 7¾ |
| 1 | - | 13.5 | 32 | 20 | 7¹⁵⁄₁₆ |
| 1.5 | - | 1 | 33 | 20.5 | 8¹⁄₁₆ |
| 2 | - | 1.5 | 33.5 | 21 | 8¼ |
| 2.5 | - | 2 | 34 | 21.5 | 8⁷⁄₁₆ |
| 3 | - | 2.5 | 35 | 22 | 8⁹⁄₁₆ |
| 3.5 | 5 | 3 | 35.5 | 22.5 | 8½ |
| 4 | 5.5 | 3.5 | 36 | 23 | 8¹³/₁₆ |
| 4.5 | 6 | 4 | 36.5 | 23.5 | 8¹⁵⁄₁₆ |
| 5 | 6.5 | 4.5 | 37.5 | 23.5 | 9¹/₁₆ |
| 5.5 | 7 | 5 | 38 | 24 | 9¼ |
| 6 | 7.5 | 5.5 | 38.5 | 24 | 9⁷⁄₁₆ |
| 6.5 | 8 | 6 | 39 | 24.5 | 9½ |
| 7 | 8.5 | 6 | 40 | 25 | 9¹¹/₁₆ |
Brand column 'US Youth' = US ('K' = toddler/little-kid sizes). '-' means no women's equivalent is given. The girls' footwear chart (https://www.underarmour.com/en-us/t/size-guide/girls-footwear/) is identical. Inches and CM are foot length: the guide measures the foot heel to toe in centimetres and translates that into sizes. Brand column 'Euro' = EU. Inch values are copied as printed (with fraction characters).
Source: www.underarmour.com/en-us/t/size-guide/boys-footwear/
Key facts
- Under Armour's official men's chart: US 9 = UK 8 · EU 42.5 · CM 27 · Inches 10¼.
- Under Armour's official women's chart: US 8 = UK 6 · EU 39 · CM 24.5 · Inches 9½.
- Under Armour's chart lists US men's 9 at 27 cm, within 2 mm of the median of 29 other brands whose charts also list the size in cm (27.0 cm). On paper it is sized like most of them.
- Under Armour lists no width options in its size guide.
- Source: Under Armour's official size guide, checked on 2026-10-24.
What Under Armour says about fit
- Trace your whole foot with full weight on it and measure heel to toe; if you fall between sizes, size up. (source)
- Measure later in the day for the best result. (source)
How Under Armour compares with other brands
Under Armour's chart lists US men's 9 at 27 cm, within 2 mm of the median of 29 other brands whose charts also list the size in cm (27.0 cm). On paper it is sized like most of them.
Convert your Under Armour size to another brand
What we could not verify
- No width options (such as wide or 4E) are listed in Under Armour's shoe size guide, so widths are left out.
Questions
Which length does Under Armour's size chart list?
Under Armour's charts give these lengths — CM: size in cm, given by the brand as foot length. A measured foot length and a size in cm are about 8 mm apart for the same size, so compare your own foot length only with a column on the same scale.
Does the official chart tell me how a Under Armour shoe will fit?
Only in part. The chart gives the length each size is meant for; how a particular model fits also depends on its last, width and materials, which the chart does not show. Under Armour itself advises: Trace your whole foot with full weight on it and measure heel to toe; if you fall between sizes, size up. Measure later in the day for the best result.
When should I not compare Under Armour sizes with another brand?
When the two charts list different lengths. A measured foot length and a size in cm are about 8 mm apart, and the length of a foot is not the inside length of a shoe, so such a match can be half a size or more off. The converter matches only lengths on the same scale and lists the other brands separately.
When was Under Armour's chart last checked?
On 2026-10-24, against Under Armour's official size guide linked under each chart. The date changes only when the chart is checked again against the official page or its numbers change, not when this page's layout or wording changes.
Cite or reuse this data
Suggested citation: Sizelane, “Under Armour Size Chart”, https://sizelane.com/under-armour-size-chart (checked 2026-10-24).
- Download all Under Armour charts (JSON)
- CSV: Men's shoes
- CSV: Women's shoes
- CSV: Kids' shoes (boys and girls)
The data is free to reuse under CC BY 4.0: name Sizelane, link to this page and keep the link to Under Armour's official source. Licence and update policy