Athleta to Nike leggings size
The short answer
Athleta XXS is Nike XS by the two brands' own charts. 5 of 9 Athleta sizes land on a different label at Nike.
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.
| Athleta | Athleta builds it for | Nike, by chart | Same label | Nike builds it for | Nike also prints |
|---|---|---|---|---|---|
| XXS | waist 24.3 in, hip 34 in | XS | XXS | waist 23.5 to 26 in, hip 33 to 35.5 in | US numeric 0-2 |
| XS | waist 25.3 to 26.3 in, hip 35 to 36 in | XS | XS | waist 23.5 to 26 in, hip 33 to 35.5 in | US numeric 0-2 |
| S | waist 27.3 to 28.3 in, hip 37 to 38 in | S | S | waist 26 to 29 in, hip 35.5 to 38.5 in | US numeric 4-6 |
| M | waist 29.3 to 30.3 in, hip 39 to 40 in | M | M | waist 29 to 31.5 in, hip 38.5 to 41 in | US numeric 8-10 |
| L | waist 31.8 to 33.3 in, hip 41.5 to 43 in | L | L | waist 31.5 to 34.5 in, hip 41 to 44 in | US numeric 12-14 |
| XL | waist 34.3 in, hip 44.5 in | L | XL | waist 31.5 to 34.5 in, hip 41 to 44 in | US numeric 12-14 |
| 1X | waist 38 to 40 in, hip 47.3 to 49.3 in | XXL | 1X | waist 38.5 to 42.5 in, hip 47 to 50 in | US numeric 20-22 |
| 2X | waist 42 to 44.5 in, hip 51.3 to 53.8 in | 1X | 2X | waist 43 to 45.5 in, hip 51 to 54 in | US numeric 18W-20W |
| 3X | waist 47 to 49.5 in, hip 56.3 to 58.8 in | 2X | 3X | waist 45.5 to 49 in, hip 54 to 57 in | US numeric 22W-24W |
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
- Athleta size guide, read on 2026-09-17. Athleta on TrueToSize
- Nike size guide, read on 2026-09-17. Nike on TrueToSize