J.Crew vs Mack Weldon: which size fits the same?
In tees, a J.Crew L is closest to a Mack Weldon XL (½″ roomier). In polos, a J.Crew L is closest to a Mack Weldon M (½″ snugger).
Tees
J.Crew tees measure about 1½″ more around than Mack Weldon at the same size. A J.Crew L is closest to a Mack Weldon XL (½″ roomier).
| J.Crew | Chest · length | Closest Mack Weldon | Chest · length | Mack Weldon is |
|---|---|---|---|---|
| J.Crew XS | 34¾″ · 26″ | none close | ||
| J.Crew S | 37¾″ · 26″ | Mack Weldon S | 38″ · 28″ | the same around |
| J.Crew M | 40¾″ · 26¾″ | Mack Weldon M | 40″ · 29″ | ¾″ snugger |
| J.Crew L | 43½″ · 27¾″ | Mack Weldon XL | 44″ · 30½″ | ½″ roomier |
| J.Crew XL | 46½″ · 28¾″ | Mack Weldon XXL | 46″ · 31″ | ½″ snugger |
| J.Crew XXL | 49½″ · 29¼″ | none close |
From J.Crew: J.Crew Broken-in T-Shirt, J.Crew Broken-in Pocket T-Shirt. From Mack Weldon: Mack Weldon SILVER Crew Neck T-Shirt, Mack Weldon Pima Crew Neck T-Shirt, Mack Weldon Pima Short Sleeve Henley. Relaxed and oversized cuts are left out.
Polos
Mack Weldon polos measure about 2″ more around than J.Crew at the same size. A J.Crew L is closest to a Mack Weldon M (½″ snugger).
| J.Crew | Chest · length | Closest Mack Weldon | Chest · length | Mack Weldon is |
|---|---|---|---|---|
| J.Crew XS | 34¾″ · 26″ | none close | ||
| J.Crew S | 37¾″ · 26″ | none close | ||
| J.Crew M | 40¾″ · 26¾″ | Mack Weldon S | 41″ · 27½″ | the same around |
| J.Crew L | 43½″ · 27¾″ | Mack Weldon M | 43″ · 28½″ | ½″ snugger |
| J.Crew XL | 46½″ · 28¾″ | Mack Weldon L | 45½″ · 29¾″ | 1″ snugger |
| J.Crew XXL | 49½″ · 29¼″ | Mack Weldon XXL | 50″ · 31″ | ½″ roomier |
| J.Crew 3XL | 52½″ · 29¼″ | none close |
From J.Crew: J.Crew Washed Piqué Polo Shirt. From Mack Weldon: Mack Weldon Heavyweight Slub Polo, Mack Weldon SILVER Pique Polo. Relaxed and oversized cuts are left out.
More: J.Crew sizing · Mack Weldon sizing
Get your exact size in any of these
Add three shirts you own that fit well. FitCard compares their real measurements with every shirt here and tells you the one size to buy, and why, in terms of your own shirts. Free, no tape measure.
Garment measurements: the shirt itself, chest all the way around and length from shoulder to hem, from each brand's own chart or wholesale spec sheet, checked November 2026. Shirts with half or more cotton are shown as they come out of a dryer (about 2% less around and 4% shorter). Brands change their cuts, so check the shop's chart before you buy.