Sport-Tek vs Uniqlo: which size fits the same?
In tees, a Sport-Tek L is closest to a Uniqlo L (1½″ snugger). In polos, a Sport-Tek L is closest to a Uniqlo L (1″ snugger).
Tees
Sport-Tek tees measure about 1″ more around than Uniqlo at the same size. A Sport-Tek L is closest to a Uniqlo L (1½″ snugger).
| Sport-Tek | Chest · length | Closest Uniqlo | Chest · length | Uniqlo is |
|---|---|---|---|---|
| Sport-Tek XS | 37″ · 27″ | Uniqlo XS | 37¼″ · 25″ | the same around |
| Sport-Tek S | 40″ · 28″ | Uniqlo S | 39¼″ · 26¼″ | ¾″ snugger |
| Sport-Tek M | 43″ · 29″ | Uniqlo M | 41¾″ · 27¼″ | 1¼″ snugger |
| Sport-Tek L | 46″ · 30″ | Uniqlo L | 44½″ · 28¼″ | 1½″ snugger |
| Sport-Tek XL | 49″ · 31″ | Uniqlo XL | 48″ · 29″ | 1″ snugger |
| Sport-Tek XXL | 52″ · 32″ | Uniqlo XXL | 51″ · 29″ | 1″ snugger |
| Sport-Tek 3XL | 56″ · 32½″ | none close |
From Sport-Tek: Sport-Tek PosiCharge Competitor Tee (ST350). 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.
Polos
Sport-Tek polos measure about 1″ more around than Uniqlo at the same size. A Sport-Tek L is closest to a Uniqlo L (1″ snugger).
| Sport-Tek | Chest · length | Closest Uniqlo | Chest · length | Uniqlo is |
|---|---|---|---|---|
| Sport-Tek XS | 37½″ · 28″ | Uniqlo XS | 37¾″ · 25″ | the same around |
| Sport-Tek S | 40½″ · 29″ | Uniqlo S | 40¼″ · 26¼″ | the same around |
| Sport-Tek M | 43½″ · 30″ | Uniqlo M | 42¾″ · 27″ | ¾″ snugger |
| Sport-Tek L | 46½″ · 31″ | Uniqlo L | 45½″ · 28¼″ | 1″ snugger |
| Sport-Tek XL | 49½″ · 32″ | Uniqlo XL | 48½″ · 29″ | 1″ snugger |
| Sport-Tek XXL | 52½″ · 33″ | Uniqlo 3XL | 54″ · 30″ | 1½″ roomier |
| Sport-Tek 3XL | 56½″ · 33½″ | none close |
From Sport-Tek: Sport-Tek Micropique Sport-Wick Polo (ST650). From Uniqlo: Uniqlo DRY-EX Polo Shirt, Uniqlo AIRism Cotton Pique Polo Shirt, Uniqlo DRY Pique Polo Shirt. Relaxed and oversized cuts are left out.
More: Sport-Tek sizing · Uniqlo 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.