Old Navy to Acne Studios jeans size

The short answer

Old Navy 00 is Acne Studios 32 by the two brands' own charts. 9 of 9 Old Navy sizes land on a different label at Acne Studios.

Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.

Every Old Navy size read across to Acne Studios. US numeric sizes on the left, US numeric on the right.
Old Navy	Old Navy builds it for	Acne Studios, by chart	Same label	Acne Studios builds it for	Acne Studios also prints
00	waist 24 in, hip 34.5 in	32	not published	waist 23.5 in, hip 33 in	Letter XXS · UK 4 · FR 34 · IT 38 · JP 3
00	waist 24 in, hip 34.5 in	32	not published	waist 23.5 in, hip 33 in	Letter XXS · UK 4 · FR 34 · IT 38 · JP 3
2	waist 26 in, hip 36.5 in	36	not published	waist 26.5 in, hip 36 in	Letter S · UK 8 · FR 38 · IT 42 · JP 7
4	waist 27 in, hip 37.5 in	36	not published	waist 26.5 in, hip 36 in	Letter S · UK 8 · FR 38 · IT 42 · JP 7
6	waist 28 in, hip 38.5 in	38	not published	waist 28 in, hip 37.5 in	Letter M · UK 10 · FR 40 · IT 44 · JP 9
8	waist 29 in, hip 39.5 in	38 or 40	not published	waist 28 in, hip 37.5 in	Letter M · UK 10 · FR 40 · IT 44 · JP 9
10	waist 30 in, hip 40.5 in	40	not published	waist 30 in, hip 39.5 in	Letter L · UK 12 · FR 42 · IT 46 · JP 11
12	waist 31.5 in, hip 42 in	42	not published	waist 31.5 in, hip 42.5 in	Letter XL · UK 14 · FR 44 · IT 48 · JP 13
14	waist 33.5 in, hip 44 in	44	not published	waist 33 in, hip 44.5 in	Letter XXL · UK 16 · FR 46 · IT 50 · JP 15
16	waist 36.3 in, hip 46.5 in	not made	not published	not published	not published
18	waist 39 in, hip 49 in	not made	not published	not published	not published
20	waist 42 in, hip 51.5 in	not made	not published	not published	not published
22	waist 44.3 in, hip 53.8 in	not made	not published	not published	not published
24	waist 46.6 in, hip 56.1 in	not made	not published	not published	not published
26	waist 49 in, hip 58.5 in	not made	not published	not published	not published
28	waist 51.5 in, hip 61 in	not made	not published	not published	not published
30	waist 54 in, hip 63.5 in	not made	30	not published	not published

Tinted rows change label or sit between two sizes. 8 sizes have no counterpart on the Acne Studios chart. Read from the two charts only; no formula and no averaging.

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.

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Sources

Old Navy size guide, read on 2026-09-17. Old Navy on TrueToSize
Acne Studios size guide, read on 2026-09-18.

Acne Studios to Old Navy