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Convert / Menswear

Next to Old Navy size

The short answer

Next S is Old Navy XS by the two brands' own charts. 7 of 9 Next sizes land on a different label at Old Navy.

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

Every Next size read across to Old Navy. Letter sizes on the left, Letter on the right.
NextNext builds it forOld Navy, by chartSame labelOld Navy builds it forOld Navy also prints
XXSchest 30 to 32 innot madenot publishednot publishednot published
XSchest 33 to 35 inXSXSchest 36 to 37 in, neck 13 to 13.5 in, sleeve 31.5 to 32 innot published
Schest 36 to 38 inXSSchest 36 to 37 in, neck 13 to 13.5 in, sleeve 31.5 to 32 innot published
Mchest 39 to 41 inMMchest 40 to 42 in, neck 15 to 15.5 in, sleeve 33.5 to 34 innot published
Lchest 42 to 44 inM or LLchest 40 to 42 in, neck 15 to 15.5 in, sleeve 33.5 to 34 innot published
XLchest 45 to 47 inLXLchest 44 to 46 in, neck 16 to 16.5 in, sleeve 34.5 to 35 innot published
2XLchest 48 to 50 inXLXXLchest 48 to 50 in, neck 17 to 17.5 in, sleeve 35.5 to 36 innot published
3XLchest 51 to 53 inXXLXXXLchest 51 to 53 in, neck 18 to 18.5 in, sleeve 36.5 to 37 innot published
4XLchest 54 to 56 inXXXLXXXXLchest 55 to 57 in, neck 19 to 19.5 in, sleeve 37.5 to 38 innot published
5XLchest 57 to 59 inXXXXLnot publishedchest 58 to 60 in, neck 20.5 to 21 in, sleeve 38.5 to 39 innot published
Tinted rows change label or sit between two sizes. 1 sizes have no counterpart on the Old Navy chart. 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

Old Navy to Next