Marks & Spencer to Nike size
The short answer
Marks & Spencer XXL is Nike XL by the two brands' own charts. 3 of 8 Marks & Spencer sizes land on a different label at Nike.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
On 1 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.
| Marks & Spencer | Marks & Spencer builds it for | Nike, by chart | Same label | Nike builds it for | Nike also prints |
|---|---|---|---|---|---|
| XS | chest 32 to 34 in | XS | XS | chest 31.5 to 35 in, waist 25.5 to 29 in, hip 31.5 to 35 in | not published |
| S | chest 35 to 37 in | S | S | chest 35 to 37.5 in, waist 29 to 32 in, hip 35 to 37.5 in | not published |
| M | chest 38 to 40 in | M | M | chest 37.5 to 41 in, waist 32 to 35 in, hip 37.5 to 41 in | not published |
| L | chest 41 to 43 in | L | L | chest 41 to 44 in, waist 35 to 38 in, hip 41 to 44 in | not published |
| XL | chest 44 to 46 in | XL | XL | chest 44 to 48.5 in, waist 38 to 43 in, hip 44 to 47 in | not published |
| XXL | chest 47 to 49 in | XL | XXL | chest 44 to 48.5 in, waist 38 to 43 in, hip 44 to 47 in | not published |
| XXXL | chest 50 to 52 in | XXL | 3XL | chest 48.5 to 53.5 in, waist 43 to 47.5 in, hip 47 to 50.5 in | not published |
| 4XL | chest 52 to 54 in | XXL | 4XL | chest 48.5 to 53.5 in, waist 43 to 47.5 in, hip 47 to 50.5 in | not published |
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.
Sources
- Marks & Spencer size guide, read on 2026-09-18.
- Nike size guide, read on 2026-09-18. Nike on TrueToSize