Madewell to Gap jeans size
The short answer
Madewell 30 is Gap 12 by the two brands' own charts.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| Madewell | Madewell builds it for | Gap, by chart | Same label | Gap builds it for | Gap also prints |
|---|---|---|---|---|---|
| 23 | waist 24 in, hip 34 in | 000 | not published | waist 24 in, hip 33.3 in | Letter XXS |
| 24 | waist 25 in, hip 35 in | 00 | not published | waist 24.8 in, hip 34.3 in | Letter XXS |
| 25 | waist 26 in, hip 36 in | 0 or 2 | not published | waist 25.5 in, hip 35.3 in | Letter XS |
| 26 | waist 27 in, hip 37 in | 2 or 4 | not published | waist 26.5 in, hip 36.3 in | Letter XS |
| 27 | waist 28 in, hip 38 in | 4 or 6 | not published | waist 27.5 in, hip 37.3 in | Letter S |
| 28 | waist 29 in, hip 39 in | 6 or 8 | not published | waist 28.5 in, hip 38.3 in | Letter S |
| 29 | waist 30.3 in, hip 40.3 in | 10 | not published | waist 30.5 in, hip 40.3 in | Letter M |
| 30 | waist 31.5 in, hip 41.5 in | 12 | not published | waist 32 in, hip 41.8 in | Letter L |
| 31 | waist 33 in, hip 43 in | 14 | not published | waist 33.5 in, hip 43.3 in | Letter L |
| 32 | waist 34.5 in, hip 44.5 in | 14 or 16 | not published | waist 33.5 in, hip 43.3 in | Letter L |
| 33 | waist 36.3 in, hip 46.3 in | 16 or 18 | not published | waist 35.5 in, hip 45.3 in | Letter XL |
| 14W | waist 37 in, hip 47 in | 18 | not published | waist 37.5 in, hip 47.3 in | Letter XL |
| 16W | waist 39 in, hip 49 in | 20 | not published | waist 39.5 in, hip 49.3 in | Letter XXL |
| 18W | waist 41 in, hip 51 in | 22 | not published | waist 41.5 in, hip 51.3 in | Letter XXL |
| 20W | waist 43 in, hip 53 in | not made | not published | not published | not published |
| 22W | waist 45 in, hip 55 in | not made | not published | not published | not published |
| 24W | waist 47 in, hip 57 in | not made | not published | not published | not published |
| 26W | waist 49 in, hip 59 in | not made | not published | not published | not published |
| 28W | waist 51 in, hip 61 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
- Madewell size guide, read on 2026-09-17. Madewell on TrueToSize
- Gap size guide, read on 2026-09-17. Gap on TrueToSize