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Convert / Women's clothing

MUJI to Uniqlo clothing size

The short answer

MUJI L is Uniqlo L by the two brands' own charts. 0 of 6 MUJI sizes land on a different label at Uniqlo.

Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.

Every MUJI Japan sizing size read across to Uniqlo Japan sizing. Letter sizes on the left, Letter on the right.
MUJI Japan sizingMUJI builds it forUniqlo Japan sizing, by chartSame labelUniqlo builds it forUniqlo also prints
XSbust 28.7 to 30.3 in, waist 22.1 to 23.6 in, hip 31.9 to 33.5 inXSXSbust 28.7 to 31.1 in, waist 22.4 to 24.8 in, hip 31.5 to 33.9 inJP 5
Sbust 29.5 to 31.9 in, waist 22.8 to 25.2 in, hip 32.7 to 35 inSSbust 30.3 to 32.7 in, waist 24 to 26.4 in, hip 33.1 to 35.4 inJP 7
Mbust 31.5 to 33.9 in, waist 24.8 to 27.2 in, hip 34.7 to 37 inMMbust 31.9 to 34.3 in, waist 25.6 to 28 in, hip 34.7 to 37 inJP 9
Lbust 33.5 to 35.8 in, waist 26.8 to 29.1 in, hip 36.6 to 39 inLLbust 33.5 to 35.8 in, waist 27.2 to 29.5 in, hip 36.2 to 38.6 inJP 11
XLbust 35.4 to 37.8 in, waist 28.7 to 31.1 in, hip 38.6 to 40.9 inXLXLbust 35.8 to 38.2 in, waist 29.5 to 31.9 in, hip 38.6 to 40.9 inJP 13
XXLbust 37.4 to 39.8 in, waist 30.7 to 33.1 in, hip 40.6 to 42.9 inXXLXXLbust 38.2 to 40.6 in, waist 31.9 to 34.3 in, hip 40.9 to 43.3 inJP 15
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, not a fit. We do not collect fit reports for this category yet, so this table is the two brands' own claims and nothing more.

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Sources

Uniqlo to MUJI