J.Crew to Arc'teryx clothing size
The short answer
J.Crew 18 is Arc'teryx XL or XXL 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.
| J.Crew | J.Crew builds it for | Arc'teryx, by chart | Same label | Arc'teryx builds it for | Arc'teryx also prints |
|---|---|---|---|---|---|
| 000 | bust 31 in, waist 23 in | not made | not published | not published | not published |
| 000 | bust 31 in, waist 23 in | not made | not published | not published | not published |
| 000 | bust 31 in, waist 23 in | not made | not published | not published | not published |
| 2 | bust 34 in, waist 26 in | XS or S | XS | bust 33.1 in, waist 26.8 in, hip 36.2 in | not published |
| 4 | bust 35 in, waist 27 in | S | S | bust 35 in, waist 28.7 in, hip 38.2 in | not published |
| 6 | bust 36 in, waist 28 in | S or M | S | bust 35 in, waist 28.7 in, hip 38.2 in | not published |
| 8 | bust 37 in, waist 29 in | M | M | bust 37 in, waist 30.7 in, hip 40.2 in | not published |
| 10 | bust 38 in, waist 30 in | M | M | bust 37 in, waist 30.7 in, hip 40.2 in | not published |
| 12 | bust 39.5 in, waist 31.5 in | L | L | bust 40.2 in, waist 33.9 in, hip 43.3 in | not published |
| 14 | bust 41 in, waist 33 in | L | L | bust 40.2 in, waist 33.9 in, hip 43.3 in | not published |
| 16 | bust 43.5 in, waist 35.5 in | XL | XL | bust 44.1 in, waist 37.8 in, hip 47.2 in | not published |
| 18 | bust 46 in, waist 38 in | XL or XXL | not published | bust 44.1 in, waist 37.8 in, hip 47.2 in | not published |
| 20 | bust 48.5 in, waist 40.5 in | XXL | not published | bust 48 in, waist 41.7 in, hip 51.2 in | not published |
| 22 | bust 51 in, waist 43 in | not made | not published | not published | not published |
| 24 | bust 53.5 in, waist 45.5 in | not made | not published | not published | 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
- J.Crew size guide, read on 2026-09-18.
- Arc'teryx size guide, read on 2026-09-18.