Gildan vs Uniqlo: which size fits the same?

In tees, a Gildan L is closest to a Uniqlo M (1½″ snugger). In long sleeves, a Gildan L is closest to a Uniqlo M (1″ snugger).

Tees

Uniqlo tees measure about 2″ more around than Gildan at the same size. A Gildan L is closest to a Uniqlo M (1½″ snugger).

GildanChest · lengthClosest UniqloChest · lengthUniqlo is
Gildan XS31¼″ · 26″none close
Gildan S35¼″ · 27″Uniqlo XS37¼″ · 25″2″ roomier
Gildan M39¼″ · 27¾″Uniqlo S39¼″ · 26¼″the same around
Gildan L43″ · 28¾″Uniqlo M41¾″ · 27¼″1½″ snugger
Gildan XL47″ · 29¾″Uniqlo XL48″ · 29″1″ roomier
Gildan XXL51″ · 30¾″Uniqlo XXL51″ · 29″the same around
Gildan 3XL55″ · 31¾″Uniqlo 3XL54″ · 30″1″ snugger

From Gildan: Gildan Heavy Cotton T-Shirt (5000), Gildan Ultra Cotton T-Shirt (2000), Gildan Softstyle T-Shirt (64000), Gildan DryBlend T-Shirt (8000). From Uniqlo: Uniqlo AIRism Cotton Crew Neck T-Shirt, Uniqlo AIRism T-Shirt, Uniqlo SUPIMA Cotton T-Shirt, Uniqlo DRY-EX T-Shirt, Uniqlo DRY Color T-Shirt, Uniqlo DRY Waffle Henley T-Shirt, Uniqlo Crew Neck Short-Sleeve T-Shirt. Relaxed and oversized cuts are left out.

Long sleeves and layers

Uniqlo long sleeves measure about 2″ more around than Gildan at the same size. A Gildan L is closest to a Uniqlo M (1″ snugger).

GildanChest · lengthClosest UniqloChest · lengthUniqlo is
Gildan XS35¼″ · 25″none close
Gildan S37¼″ · 26½″none close
Gildan M41¼″ · 27¼″Uniqlo S42″ · 25¾″¾″ roomier
Gildan L45″ · 28¼″Uniqlo M44″ · 27″1″ snugger
Gildan XL49″ · 29¼″Uniqlo XL50½″ · 29″1½″ roomier
Gildan XXL53″ · 30¼″Uniqlo XXL52¾″ · 29¼″the same around
Gildan 3XL56¾″ · 31¼″Uniqlo 3XL55¾″ · 30″1″ snugger

From Gildan: Gildan Heavy Cotton Long Sleeve T-Shirt (5400), Gildan Ultra Cotton Long Sleeve T-Shirt (2400), Gildan Heavy Blend Hooded Sweatshirt (18500), Gildan Heavy Blend Crewneck Sweatshirt (18000). From Uniqlo: Uniqlo Waffle T-Shirt | Long Sleeve, Uniqlo AIRism Cotton T-Shirt | Long Sleeve, Uniqlo Waffle Henley Neck T-Shirt | Long Sleeve, Uniqlo Sweatshirt. Relaxed and oversized cuts are left out.

More: Gildan sizing · Uniqlo 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.