Buck Mason vs Carhartt: which size fits the same?

In tees, a Buck Mason L is closest to a Carhartt M (1½″ roomier). In long sleeves, a Buck Mason L is closest to a Carhartt M (the same around).

Tees

Carhartt tees measure about 5″ more around than Buck Mason at the same size. A Buck Mason L is closest to a Carhartt M (1½″ roomier).

Buck MasonChest · lengthClosest CarharttChest · lengthCarhartt is
Buck Mason XS37½″ · 26″none close
Buck Mason S39½″ · 26½″Carhartt S41¼″ · 28″1¾″ roomier
Buck Mason M41½″ · 27″Carhartt S41¼″ · 28″the same around
Buck Mason L43½″ · 27½″Carhartt M45″ · 28½″1½″ roomier
Buck Mason XL46½″ · 28¼″Carhartt M45″ · 28½″1½″ snugger
Buck Mason XXL49½″ · 29″Carhartt L49″ · 29″½″ snugger

From Buck Mason: Buck Mason Pima Classic Tee, Buck Mason Slub Curved Hem Tee, Buck Mason Pima Curved Hem Tee, Buck Mason Toughknit Classic Tee, Buck Mason Yuma Hemp Cotton Classic Tee, Buck Mason Field-Spec Cotton Heavy Tee, Buck Mason Slub Classic Tee. From Carhartt: Carhartt Workwear Pocket Short Sleeve T-Shirt (K87). Relaxed and oversized cuts are left out.

Long sleeves and layers

Carhartt long sleeves measure about 4″ more around than Buck Mason at the same size. A Buck Mason L is closest to a Carhartt M (the same around).

Buck MasonChest · lengthClosest CarharttChest · lengthCarhartt is
Buck Mason XS38″ · 25¼″none close
Buck Mason S39¾″ · 25¾″Carhartt S41¼″ · 28″1¼″ roomier
Buck Mason M41¾″ · 26¼″Carhartt S41¼″ · 28″¾″ snugger
Buck Mason L44¾″ · 27″Carhartt M45″ · 28½″the same around
Buck Mason XL47¾″ · 27¾″Carhartt L49″ · 29″1¼″ roomier
Buck Mason XXL50¾″ · 28½″Carhartt L49″ · 29″1¾″ snugger

From Buck Mason: Buck Mason Field-Spec Sandlot Tee, Buck Mason Field-Spec Rugby Polo, Buck Mason Welterweight Hooded Sweatshirt, Buck Mason Vintage Thermal Henley. From Carhartt: Carhartt Workwear Pocket Long Sleeve T-Shirt (K126). Relaxed and oversized cuts are left out.

More: Buck Mason sizing · Carhartt sizing

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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.