Adidas to Decathlon leggings size
The short answer
adidas XS is Decathlon 2XS by the two brands' own charts. 3 of 9 adidas sizes land on a different label at Decathlon.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| adidas | adidas builds it for | Decathlon, by chart | Same label | Decathlon builds it for | Decathlon also prints |
|---|---|---|---|---|---|
| 2XS | waist 22 to 23.5 in, hip 31.5 to 33 in, inseam 30.5 in | 2XS | 2XS | waist 23.6 to 24.8 in, hip 31.1 to 33.5 in | not published |
| XS | waist 24 to 26 in, hip 33.5 to 35.5 in, inseam 31 in | 2XS | XS | waist 23.6 to 24.8 in, hip 31.1 to 33.5 in | not published |
| S | waist 26.5 to 28.5 in, hip 36 to 38 in, inseam 31 in | S | S | waist 27.2 to 28.7 in, hip 35.4 to 37.8 in | not published |
| M | waist 29 to 31 in, hip 38.5 to 40.5 in, inseam 31.5 in | M | M | waist 29.1 to 31.1 in, hip 37.8 to 40.2 in | not published |
| L | waist 31.5 to 33.5 in, hip 41 to 43 in, inseam 31.5 in | L | L | waist 31.5 to 33.9 in, hip 40.2 to 42.5 in | not published |
| XL | waist 34 to 37 in, hip 43.5 to 46 in, inseam 31.5 in | XL | XL | waist 34.3 to 36.6 in, hip 42.5 to 44.9 in | not published |
| 2XL | waist 37.5 to 41 in, hip 46.5 to 49 in, inseam 32 in | 2XL | 2XL | waist 37 to 39.4 in, hip 44.9 to 47.2 in | not published |
| 1X | waist 35 to 38.5 in, hip 43.5 to 47 in, inseam 31 in | XL | not published | waist 34.3 to 36.6 in, hip 42.5 to 44.9 in | not published |
| 2X | waist 39 to 42.5 in, hip 47.5 to 51 in, inseam 31 in | 2XL | not published | waist 37 to 39.4 in, hip 44.9 to 47.2 in | not published |
| 3X | waist 43 to 46.5 in, hip 51.5 to 55 in, inseam 30.5 in | not made | not published | not published | not published |
| 4X | waist 47 to 50.5 in, hip 55.5 to 59 in, inseam 30 in | not made | not published | not published | not published |
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
- Decathlon size guide, read on 2026-09-18.