Uniqlo to 2XU leggings size

The short answer

Uniqlo XXL is 2XU XL by the two brands' own charts. 1 of 7 Uniqlo sizes land on a different label at 2XU.

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

Every Uniqlo size read across to 2XU Flex & Fluid Tights. Letter sizes on the left, Letter on the right.
Uniqlo	Uniqlo builds it for	2XU Flex & Fluid Tights, by chart	Same label	2XU builds it for	2XU also prints
XXS	waist 22.5 to 24.8 in, hip 32.8 to 35 in	XXS	XXS	waist 23 to 24.5 in, hip 33 to 34.5 in	not published
XS	waist 24 to 26.5 in, hip 34.3 to 36.5 in	XS	XS	waist 25 to 26 in, hip 35 to 36.5 in	not published
S	waist 25.5 to 28 in, hip 35.8 to 38.3 in	S	S	waist 26.5 to 28 in, hip 37 to 38.5 in	not published
M	waist 27.3 to 29.5 in, hip 37.5 to 39.8 in	M	M	waist 28.5 to 30 in, hip 39 to 40.5 in	not published
L	waist 29.5 to 32 in, hip 39.8 to 42.3 in	L	L	waist 30.5 to 32 in, hip 41 to 42.5 in	not published
XL	waist 32 to 34.3 in, hip 42.3 to 44.5 in	XL	XL	waist 32.5 to 34 in, hip 43 to 44.5 in	not published
XXL	waist 34.3 to 36.5 in, hip 44.5 to 46.8 in	XL	not published	waist 32.5 to 34 in, hip 43 to 44.5 in	not published

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.

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Sources

Uniqlo size guide, read on 2026-09-18. Uniqlo on TrueToSize
2XU Flex & Fluid Tights size guide, read on 2026-09-18.

2XU to Uniqlo