Aerie (OFFLINE) to Nike leggings size

The short answer

Aerie (OFFLINE) XXL is Nike XL by the two brands' own charts. 1 of 7 Aerie (OFFLINE) 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.

Every Aerie (OFFLINE) size read across to Nike. Letter sizes on the left, Letter on the right.
Aerie (OFFLINE)	Aerie (OFFLINE) builds it for	Nike, by chart	Same label	Nike builds it for	Nike also prints
XXS	waist 22.5 to 23.5 in, hip 32 to 33 in	XXS	XXS	waist 21.3 to 23.5 in, hip 30.5 to 33 in	US numeric 0
XS	waist 24.5 to 25.5 in, hip 34 to 35 in	XS	XS	waist 23.5 to 26 in, hip 33 to 35.5 in	US numeric 0-2
S	waist 26.5 to 27.5 in, hip 36 to 37 in	S	S	waist 26 to 29 in, hip 35.5 to 38.5 in	US numeric 4-6
M	waist 28.5 to 29.5 in, hip 38 to 39 in	M	M	waist 29 to 31.5 in, hip 38.5 to 41 in	US numeric 8-10
L	waist 31 to 32.5 in, hip 40.5 to 42 in	L	L	waist 31.5 to 34.5 in, hip 41 to 44 in	US numeric 12-14
XL	waist 34 to 36 in, hip 43.5 to 45.5 in	XL	XL	waist 34.5 to 38.5 in, hip 44 to 47 in	US numeric 16-18
XXL	waist 38 in, hip 47.5 in	XL	XXL	waist 34.5 to 38.5 in, hip 44 to 47 in	US numeric 16-18

Tinted rows change label or sit between two sizes. 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.

Open in the converter Add an item you own

Sources

Aerie (OFFLINE) size guide, read on 2026-09-18. Aerie (OFFLINE) on TrueToSize
Nike size guide, read on 2026-09-17. Nike on TrueToSize

Nike to Aerie (OFFLINE)