Under Armour Shoes Size Chart
By Mohit Patel, Marketing Specialist, Tailor Size Guide
A Under Armour men's US 9 is a UK 8 and EU 42.5, made for a foot about 27 cm (10.6 in) long. A women's US 8 is a UK 6 and EU 39, for a foot about 24.5 cm.
Under Armour builds its sizes from a heel to toe foot length in centimetres, and its charts give that length alongside US, UK and EU sizes. Here are the men's and women's charts and how Under Armour sizes compare with other brands.
Shoe size recommender
Nike men's
US 10
US 10 · UK 9 · EU 44
Under Armour's chart puts a men's US 9 at a 27 cm foot. Nike's chart fits that foot in a men's US 10, made for feet up to 27.1 cm.
| Brand | Size | Chart foot length |
|---|---|---|
| Nike | US 10 · UK 9 · EU 44 | 27.1 cm |
| Adidas | US 10 · UK 9.5 · EU 44 | 27.1 cm |
| New Balance | US 9 · UK 8.5 · EU 42.5 | 27 cm |
| ASICS | US 9 · UK 8 · EU 42.5 | 27 cm |
| Brooks | US 10.5 · UK 9.5 · EU 44.5 | 27.09 cm |
| HOKA | US 10 · UK 9.5 · EU 44 | 27.2 cm |
| On* | US 10 · UK 9.5 · EU 44 | 27 cm |
| Reebok | US 10 · UK 9 · EU 43 | 27.2 cm |
| Under Armour | US 9 · UK 8 · EU 42.5 | 27 cm |
| Vans | US 9 · UK 8 · EU 42 | 27 cm |
| Crocs | US 9 · UK 8 · EU 42 to 43 | 27 to 27.8 cm |
| Birkenstock | US 9 to 9.5 · UK 8 · EU 42 | 26.6 to 27 cm |
| Dr. Martens | US 9 · UK 8 · EU 42 | 27 cm |
Based on each brand's own published size chart. Brands measure differently, so treat this as a starting point and check the fit notes for the model you're buying.
Under Armour men's shoe size chart
| US | UK | EU | Foot length (cm) | Foot length (in) |
|---|---|---|---|---|
| 7 | 6 | 40 | 25 | 9.8 |
| 7.5 | 6.5 | 40.5 | 25.5 | 10.0 |
| 8 | 7 | 41 | 26 | 10.2 |
| 8.5 | 7.5 | 42 | 26.5 | 10.4 |
| 9 | 8 | 42.5 | 27 | 10.6 |
| 9.5 | 8.5 | 43 | 27.5 | 10.8 |
| 10 | 9 | 44 | 28 | 11.0 |
| 10.5 | 9.5 | 44.5 | 28.5 | 11.2 |
| 11 | 10 | 45 | 29 | 11.4 |
| 11.5 | 10.5 | 45.5 | 29.5 | 11.6 |
| 12 | 11 | 46 | 30 | 11.8 |
| 12.5 | 11.5 | 47 | 30.5 | 12.0 |
| 13 | 12 | 47.5 | 31 | 12.2 |
| 13.5 | 12.5 | 48 | 31.5 | 12.4 |
| 14 | 13 | 48.5 | 32 | 12.6 |
| 14.5 | 13.5 | 49 | 32.5 | 12.8 |
| 15 | 14 | 49.5 | 33 | 13.0 |
| 15.5 | 14.5 | 50 | 33.5 | 13.2 |
| 16 | 15 | 50.5 | 34 | 13.4 |
Foot length is the length of foot Under Armour's chart gives for each size, measured from heel to longest toe. Inches are converted from centimetres.
Under Armour women's shoe size chart
| US | UK | EU | Foot length (cm) | Foot length (in) |
|---|---|---|---|---|
| 5 | 3 | 35.5 | 22.5 | 8.9 |
| 5.5 | 3.5 | 36 | 23 | 9.1 |
| 6 | 4 | 36.5 | 23.5 | 9.3 |
| 6.5 | 4.5 | 37.5 | 23.5 | 9.3 |
| 7 | 5 | 38 | 24 | 9.4 |
| 7.5 | 5.5 | 38.5 | 24 | 9.4 |
| 8 | 6 | 39 | 24.5 | 9.6 |
| 8.5 | 6 | 40 | 25 | 9.8 |
| 9 | 6.5 | 40.5 | 25.5 | 10.0 |
| 9.5 | 7 | 41 | 26 | 10.2 |
| 10 | 7.5 | 42 | 26.5 | 10.4 |
| 10.5 | 8 | 42.5 | 27 | 10.6 |
| 11 | 8.5 | 43 | 27.5 | 10.8 |
| 11.5 | 9 | 44 | 28 | 11.0 |
| 12 | 9.5 | 44.5 | 28.5 | 11.2 |
How Under Armour sizes its shoes
Under Armour says its sizing starts from your true foot length, heel to toe, in centimetres, translated into US, UK and EU sizes. Its charts also show an inch column, but those inches don't always match the centimetres, so we use the centimetre figure. Women's US sizes are men's US + 1.5, so a women's 8.5 is a men's 7.
Under Armour's men's chart runs from US 7 to 16 and its women's chart from US 5 to 12. UA also warns that, because of metric and imperial rounding, two US sizes can share one UK size or one centimetre length, which you'll see in a few rows of the chart.
Under Armour men's and women's sizes
By foot length on Under Armour's own charts, a Under Armour women's US 8 matches a men's US 7, and a men's US 9 matches a women's US 10.5. Because the converter works through foot length, it uses Under Armour's own charts rather than a general rule, so you can trust it for switching between Under Armour's men's and women's shoes.
Does Under Armour run small or large?
By its chart, Under Armour sits close to the middle: a men's US 9 is for a foot of about 27 cm, against a typical 26.8 cm across the 13 brands we cover. For example, a 27 cm foot is a Under Armour men's US 9 and a Nike men's US 10. Fit also depends on the model, so check the product page too.
Your Under Armour size in other brands
A Under Armour men's US 9 in other brands
Under Armour's chart makes a men's US 9 for a foot of about 27 cm. For that foot, the other brands' charts give:
| Brand | Size for the same foot |
|---|---|
| Nike | US 10, UK 9, EU 44 |
| Adidas | US 10, UK 9.5, EU 44 |
| New Balance | US 9, UK 8.5, EU 42.5 |
| ASICS | US 9, UK 8, EU 42.5 |
| Brooks | US 10.5, UK 9.5, EU 44.5 |
| HOKA | US 10, UK 9.5, EU 44 |
| On (approx.) | US 10, UK 9.5, EU 44 |
| Reebok | US 10, UK 9, EU 43 |
| Vans | US 9, UK 8, EU 42 |
| Crocs | US 9, UK 8, EU 42 to 43 |
| Birkenstock | US 9 to 9.5, UK 8, EU 42 |
| Dr. Martens | US 9, UK 8, EU 42 |
A Under Armour women's US 8 in other brands
Under Armour's chart makes a women's US 8 for a foot of about 24.5 cm. For that foot, the other brands' charts give:
| Brand | Size for the same foot |
|---|---|
| Nike | US 8, UK 5.5, EU 39 |
| Adidas | US 8, UK 6.5, EU 40 |
| New Balance | US 7.5, UK 5.5, EU 38 |
| ASICS | US 7.5, UK 5.5, EU 39 |
| Brooks | US 9, UK 7, EU 40.5 |
| HOKA | US 8, UK 6.5, EU 40 |
| On (approx.) | US 8.5, UK 6.5, EU 40 |
| Reebok | US 8.5, UK 6, EU 39 |
| Vans | US 8, UK 5.5, EU 38.5 |
| Crocs | US 8, UK 6, EU 38 to 39 |
| Birkenstock | US 7 to 7.5, UK 5, EU 38 |
| Dr. Martens | US 8, UK 6, EU 39 |
To convert any other size, use the converter at the top of this page or the full shoe size recommender.
Tips for buying Under Armour shoes
- Trace your foot with your full weight on it, later in the day, as Under Armour suggests.
- If you fall between two sizes on the chart, size up.
- Use the centimetre column; UA's inch column doesn't always match it.
How to measure your foot
Stand on a sheet of paper with your heel against a wall, mark the tip of your longest toe, and measure from the wall to the mark. Do it at the end of the day, in the socks you'll wear, and use your longer foot. Our guide to measuring your shoe size without a Brannock device has step by step photos.
Other brand size charts
See the Nike shoes size chart, Adidas shoes size chart, New Balance shoes size chart, ASICS shoes size chart, Brooks shoes size chart, HOKA shoes size chart, On shoes size chart, Reebok shoes size chart, Vans shoes size chart, Crocs shoes size chart, Birkenstock shoes size chart, Dr. Martens shoes size chart. To compare any two brands directly, use the shoe size recommender, and for general conversions the shoe size conversion tool.
Frequently asked questions
What size is a Under Armour men's 9 in cm?
Under Armour's chart makes a men's US 9 for a foot of about 27 cm (10.6 in). That's a UK 8 and EU 42.5.
How do Under Armour women's sizes convert to men's?
By foot length on Under Armour's own charts, a Under Armour women's US 8 matches a men's US 7, and a men's US 9 matches a women's US 10.5.
Do Under Armour shoes run small or large?
By its chart, Under Armour sits close to the middle: a men's US 9 is for a foot of about 27 cm, against a typical 26.8 cm across the 13 brands we cover. For example, a 27 cm foot is a Under Armour men's US 9 and a Nike men's US 10. Fit also depends on the model, so check the product page too.
Why do two Under Armour sizes have the same cm length?
Under Armour notes that metric and imperial rounding means two US sizes sometimes share one UK size or one centimetre length. If that happens at your size, try both or go up.
Does Under Armour size from foot length?
Yes. Under Armour says its sizes start from your heel to toe foot length in centimetres, which is the figure our chart uses.
Sources and standards
- Under Armour men's shoe size chartOfficial Under Armour size chart, copied as published.
- Under Armour women's shoe size chartOfficial Under Armour size chart, copied as published.
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