Marks & Spencer to Champion size
The short answer
Marks & Spencer XL is Champion L by the two brands' own charts. 4 of 8 Marks & Spencer sizes land on a different label at Champion.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
| Marks & Spencer | Marks & Spencer builds it for | Champion, by chart | Same label | Champion builds it for | Champion also prints |
|---|---|---|---|---|---|
| XS | chest 32 to 34 in | XS | XS | chest 32 to 36 in, waist 28 to 30 in | not published |
| S | chest 35 to 37 in | S | S | chest 36 to 38 in, waist 30 to 32 in | not published |
| M | chest 38 to 40 in | M | M | chest 38 to 41 in, waist 32 to 35 in | not published |
| L | chest 41 to 43 in | L | L | chest 41 to 45 in, waist 35 to 39 in | not published |
| XL | chest 44 to 46 in | L | XL | chest 41 to 45 in, waist 35 to 39 in | not published |
| XXL | chest 47 to 49 in | XL | 2XL | chest 45 to 49 in, waist 39 to 44 in | not published |
| XXXL | chest 50 to 52 in | 2XL | not published | chest 49 to 53 in, waist 44 to 48 in | not published |
| 4XL | chest 52 to 54 in | 2XL | not published | chest 49 to 53 in, waist 44 to 48 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.
- Champion size guide, read on 2026-09-18.