Nike to Boden clothing size

The short answer

Nike L is Boden 12 by the two brands' own charts.

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

Every Nike size read across to Boden. Letter sizes on the left, US on the right.
Nike	Nike builds it for	Boden, by chart	Same label	Boden builds it for	Boden also prints
XXS	bust 27.5 to 29.5 in, waist 21.3 to 23.5 in, hip 30.5 to 33 in	not made	not published	not published	not published
XS	bust 29.5 to 32.5 in, waist 23.5 to 26 in, hip 33 to 35.5 in	2	not published	bust 32 to 33 in, waist 25 to 26 in, hip 34 to 35 in	Letter XS
S	bust 32.5 to 35.5 in, waist 26 to 29 in, hip 35.5 to 38.5 in	4	not published	bust 33.3 to 34 in, waist 26.3 to 27 in, hip 35.3 to 36 in	Letter S
M	bust 35.5 to 38 in, waist 29 to 31.5 in, hip 38.5 to 41 in	8	not published	bust 35.5 to 37 in, waist 28.5 to 30 in, hip 37.5 to 39 in	Letter M
L	bust 38 to 41 in, waist 31.5 to 34.5 in, hip 41 to 44 in	12	not published	bust 39.5 to 41 in, waist 32.5 to 34 in, hip 41.5 to 43 in	Letter L
XL	bust 41 to 44.5 in, waist 34.5 to 38.5 in, hip 44 to 47 in	14	not published	bust 41.5 to 43 in, waist 34.5 to 36 in, hip 43.5 to 45 in	Letter L
XXL	bust 44.5 to 48.5 in, waist 38.5 to 42.5 in, hip 47 to 50 in	18	not published	bust 45.5 to 47.5 in, waist 38.5 to 40.5 in, hip 47.5 to 49.5 in	Letter XL

Tinted rows change label or sit between two sizes. 1 sizes have no counterpart on the Boden 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

Nike size guide, read on 2026-09-18. Nike on TrueToSize
Boden size guide, read on 2026-09-18.

Boden to Nike