Decathlon to Uniqlo leggings size
The short answer
Decathlon 2XS is Uniqlo XXS by the two brands' own charts. 6 of 7 Decathlon sizes land on a different label at Uniqlo.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| Decathlon | Decathlon builds it for | Uniqlo, by chart | Same label | Uniqlo builds it for | Uniqlo also prints |
|---|---|---|---|---|---|
| 2XS | waist 23.6 to 24.8 in, hip 31.1 to 33.5 in | XXS | XXS | waist 22.5 to 24.8 in, hip 32.8 to 35 in | not published |
| XS | waist 25.2 to 26.8 in, hip 33.5 to 35.4 in | XS | XS | waist 24 to 26.5 in, hip 34.3 to 36.5 in | not published |
| S | waist 27.2 to 28.7 in, hip 35.4 to 37.8 in | M | S | waist 27.3 to 29.5 in, hip 37.5 to 39.8 in | not published |
| M | waist 29.1 to 31.1 in, hip 37.8 to 40.2 in | L | M | waist 29.5 to 32 in, hip 39.8 to 42.3 in | not published |
| L | waist 31.5 to 33.9 in, hip 40.2 to 42.5 in | XL | L | waist 32 to 34.3 in, hip 42.3 to 44.5 in | not published |
| XL | waist 34.3 to 36.6 in, hip 42.5 to 44.9 in | XXL | XL | waist 34.3 to 36.5 in, hip 44.5 to 46.8 in | not published |
| 2XL | waist 37 to 39.4 in, hip 44.9 to 47.2 in | XXL | XXL | waist 34.3 to 36.5 in, hip 44.5 to 46.8 in | 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
- Decathlon size guide, read on 2026-09-18.
- Uniqlo size guide, read on 2026-09-18. Uniqlo on TrueToSize