Alphalete to 2XU leggings size

The short answer

Alphalete 2XS is 2XU XXS by the two brands' own charts. 2 of 7 Alphalete 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 Alphalete size read across to 2XU Flex & Fluid Tights. Letter sizes on the left, Letter on the right.
Alphalete	Alphalete builds it for	2XU Flex & Fluid Tights, by chart	Same label	2XU builds it for	2XU also prints
2XS	waist 23 to 24 in, hip 33 to 34 in	XXS	XXS	waist 23 to 24.5 in, hip 33 to 34.5 in	not published
XS	waist 25 to 26 in, hip 35 to 36 in	XS	XS	waist 25 to 26 in, hip 35 to 36.5 in	not published
S	waist 27 to 28 in, hip 37 to 38 in	S	S	waist 26.5 to 28 in, hip 37 to 38.5 in	not published
M	waist 29 to 30 in, hip 39 to 40 in	M	M	waist 28.5 to 30 in, hip 39 to 40.5 in	not published
L	waist 31 to 32 in, hip 41 to 42 in	L	L	waist 30.5 to 32 in, hip 41 to 42.5 in	not published
XL	waist 33 to 34 in, hip 43 to 44 in	XL	XL	waist 32.5 to 34 in, hip 43 to 44.5 in	not published
2XL	waist 35 to 36 in, hip 45 to 46 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

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

2XU to Alphalete