Universal Standard to Old Navy jeans size
The short answer
Universal Standard 8 is Old Navy 10 by the two brands' own charts. 11 of 16 Universal Standard sizes land on a different label at Old Navy.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
On 3 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.
| Universal Standard | Universal Standard builds it for | Old Navy, by chart | Same label | Old Navy builds it for | Old Navy also prints |
|---|---|---|---|---|---|
| 00 | waist 24 to 25 in, hip 34 to 35 in | 00 or 0 | 00 | waist 24 in, hip 34.5 in | Letter XXS |
| 00 | waist 24 to 25 in, hip 34 to 35 in | 00 or 0 | 00 | waist 24 in, hip 34.5 in | Letter XXS |
| 2 | waist 26 to 27 in, hip 36 to 37 in | 2 or 4 | 2 | waist 26 in, hip 36.5 in | Letter XS |
| 4 | waist 27 to 28 in, hip 37 to 38 in | 4 or 6 | 4 | waist 27 in, hip 37.5 in | Letter S |
| 6 | waist 28 to 29 in, hip 38 to 39 in | 6 or 8 | 6 | waist 28 in, hip 38.5 in | Letter S |
| 8 | waist 29 to 31 in, hip 39 to 40 in | 10 | 8 | waist 30 in, hip 40.5 in | Letter M |
| 10 | waist 33 to 35 in, hip 42 to 44 in | 14 | 10 | waist 33.5 in, hip 44 in | Letter L |
| 12 | waist 35 to 37 in, hip 44 to 46 in | 16 | 12 | waist 36.3 in, hip 46.5 in | Letter XL |
| 14 | waist 37 to 39 in, hip 46 to 48 in | 18 or 16 | 14 | waist 39 in, hip 49 in | Letter XL |
| 16 | waist 39 to 41 in, hip 48 to 50 in | 18 | 16 | waist 39 in, hip 49 in | Letter XL |
| 18 | waist 41 to 43 in, hip 50 to 52 in | 20 | 18 | waist 42 in, hip 51.5 in | Letter XXL / 2X |
| 20 | waist 43 to 45 in, hip 52 to 54 in | 22 | 20 | waist 44.3 in, hip 53.8 in | Letter 2X |
| 22 | waist 45 to 47 in, hip 54 to 56 in | 24 | 22 | waist 46.6 in, hip 56.1 in | Letter 3X |
| 24 | waist 47 to 49 in, hip 56 to 58 in | 26 or 24 | 24 | waist 49 in, hip 58.5 in | Letter 3X |
| 26 | waist 50 to 52 in, hip 59 to 61 in | 28 | 26 | waist 51.5 in, hip 61 in | Letter 4X |
| 28 | waist 53 to 55 in, hip 62 to 64 in | 30 | 28 | waist 54 in, hip 63.5 in | Letter 4X |
| 30 | waist 56 to 59 in, hip 65 to 68 in | not made | 30 | not published | not published |
| 32 | waist 60 to 63 in, hip 70 to 73 in | not made | not published | not published | not published |
| 34 | waist 59 to 63 in, hip 69 to 73 in | not made | not published | not published | not published |
| 36 | waist 63 to 67 in, hip 73 to 77 in | not made | not published | not published | not published |
| 38 | waist 66 to 70 in, hip 76 to 80 in | not made | not published | not published | not published |
| 40 | waist 70 to 74 in, hip 80 to 84 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
- Universal Standard size guide, read on 2026-09-18. Universal Standard on TrueToSize
- Old Navy size guide, read on 2026-09-17. Old Navy on TrueToSize