Uniqlo to Onzie leggings size
The short answer
Uniqlo XXS is Onzie X/S by the two brands' own charts. 7 of 7 Uniqlo sizes land on a different label at Onzie.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| Uniqlo | Uniqlo builds it for | Onzie, by chart | Same label | Onzie builds it for | Onzie also prints |
|---|---|---|---|---|---|
| XXS | waist 22.5 to 24.8 in, hip 32.8 to 35 in | X/S | not published | waist 24 to 26 in, hip 33 to 35 in | US numeric 0-2 |
| XS | waist 24 to 26.5 in, hip 34.3 to 36.5 in | X/S | not published | waist 24 to 26 in, hip 33 to 35 in | US numeric 0-2 |
| S | waist 25.5 to 28 in, hip 35.8 to 38.3 in | S/M | X/S | waist 26 to 28 in, hip 36 to 38 in | US numeric 2-6 |
| M | waist 27.3 to 29.5 in, hip 37.5 to 39.8 in | M/L | S/M | waist 28 to 31 in, hip 38 to 40 in | US numeric 6-8 |
| L | waist 29.5 to 32 in, hip 39.8 to 42.3 in | M/L | M/L | waist 28 to 31 in, hip 38 to 40 in | US numeric 6-8 |
| XL | waist 32 to 34.3 in, hip 42.3 to 44.5 in | L/L | XL | waist 31 to 33 in, hip 40 to 42 in | US numeric 10-12 |
| XXL | waist 34.3 to 36.5 in, hip 44.5 to 46.8 in | XL | not published | waist 34 to 37 in, hip 43 to 45 in | US numeric 14-16 |
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
- Uniqlo size guide, read on 2026-09-18. Uniqlo on TrueToSize
- Onzie size guide, read on 2026-09-18.