Lululemon to Uniqlo leggings size

The short answer

lululemon 8 is Uniqlo M by the two brands' own charts.

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

Every lululemon size read across to Uniqlo. US numeric sizes on the left, Letter on the right.
lululemon	lululemon builds it for	Uniqlo, by chart	Same label	Uniqlo builds it for	Uniqlo also prints
0	waist 21 in, hip 32 in	not made	not published	not published	not published
2	waist 23 in, hip 33 in	XXS	XXS	waist 22.5 to 24.8 in, hip 32.8 to 35 in	not published
4	waist 25 in, hip 35 in	XS	XS	waist 24 to 26.5 in, hip 34.3 to 36.5 in	not published
6	waist 27 in, hip 37 in	S	S	waist 25.5 to 28 in, hip 35.8 to 38.3 in	not published
8	waist 29 in, hip 39 in	M	M	waist 27.3 to 29.5 in, hip 37.5 to 39.8 in	not published
10	waist 31 in, hip 41 in	L	L	waist 29.5 to 32 in, hip 39.8 to 42.3 in	not published
12	waist 33 in, hip 43 in	XL	XL	waist 32 to 34.3 in, hip 42.3 to 44.5 in	not published
14	waist 35 in, hip 45 in	XXL	XXL	waist 34.3 to 36.5 in, hip 44.5 to 46.8 in	not published
16	waist 38 in, hip 47 in	not made	not published	not published	not published
18	waist 41 in, hip 49 in	not made	not published	not published	not published
20	waist 43 in, hip 51 in	not made	not published	not published	not published

Tinted rows change label or sit between two sizes. 4 sizes have no counterpart on the Uniqlo 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

lululemon size guide, read on 2026-09-17. lululemon on TrueToSize
Uniqlo size guide, read on 2026-09-18. Uniqlo on TrueToSize

Uniqlo to lululemon