Adidas to Under Armour leggings size
The short answer
adidas XS is Under Armour XXS by the two brands' own charts. 9 of 10 adidas sizes land on a different label at Under Armour.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
On 1 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.
| adidas | adidas builds it for | Under Armour, by chart | Same label | Under Armour builds it for | Under Armour also prints |
|---|---|---|---|---|---|
| 2XS | waist 22 to 23.5 in, hip 31.5 to 33 in, inseam 30.5 in | not made | XXS | not published | not published |
| XS | waist 24 to 26 in, hip 33.5 to 35.5 in, inseam 31 in | XXS | XS | waist 24.5 to 25.5 in, hip 33 to 34.5 in | US numeric 00 |
| S | waist 26.5 to 28.5 in, hip 36 to 38 in, inseam 31 in | SM | not published | waist 27 to 29 in, hip 36 to 38 in | US numeric 4-6 |
| M | waist 29 to 31 in, hip 38.5 to 40.5 in, inseam 31.5 in | MD | not published | waist 29 to 31 in, hip 38 to 40 in | US numeric 8-10 |
| L | waist 31.5 to 33.5 in, hip 41 to 43 in, inseam 31.5 in | LG | not published | waist 31 to 34 in, hip 40 to 43 in | US numeric 12-14 |
| XL | waist 34 to 37 in, hip 43.5 to 46 in, inseam 31.5 in | XL | XL | waist 34 to 37 in, hip 43 to 46 in | US numeric 16 |
| 2XL | waist 37.5 to 41 in, hip 46.5 to 49 in, inseam 32 in | XXL | XXL | waist 37 to 40 in, hip 46 to 49 in | US numeric 18 |
| 1X | waist 35 to 38.5 in, hip 43.5 to 47 in, inseam 31 in | XL | 1X | waist 34 to 37 in, hip 43 to 46 in | US numeric 16 |
| 2X | waist 39 to 42.5 in, hip 47.5 to 51 in, inseam 31 in | 1X | 2X | waist 39 to 43.5 in, hip 47 to 50.5 in | US numeric 16W-18W |
| 3X | waist 43 to 46.5 in, hip 51.5 to 55 in, inseam 30.5 in | 2X | 3X | waist 43.5 to 48.5 in, hip 50.5 to 54.5 in | US numeric 20W-22W |
| 4X | waist 47 to 50.5 in, hip 55.5 to 59 in, inseam 30 in | 3X | not published | waist 48.5 to 53 in, hip 54.5 to 58 in | US numeric 24W-26W |
What wearers say
Charts describe a garment. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.
Sources
- adidas size guide, read on 2026-09-18. adidas on TrueToSize
- Under Armour size guide, read on 2026-09-17. Under Armour on TrueToSize