T-Shirt Size Calculator: Find Your Exact Fit
Use this t-shirt size calculator to end loose-shoulder, tight-armhole disasters in one shot. Enter your chest, length, and sleeve measurements and get the right tee size for any brand — basics, streetwear, vintage, or oversized. The calculator handles unisex, men's, and women's cuts and converts US, UK, EU, and Japanese sizes in the same view. Use the calculator below to get your exact fit in 30 seconds.
How it works
Measure yourself
Take your bust, waist, and hips with a soft tape. See the full measurement guide.
Enter the numbers
Type your measurements into the calculator above. Pick inches or cm — the tool converts both ways.
Get your size
Match the result against the brand's chart and order with confidence.
Unisex t-shirt sizing — chest-driven
| Size | US | UK | EU | Bust |
|---|---|---|---|---|
| XS | 0–2 | 4–6 | 32–34 | 31–33" |
| S | 4–6 | 8–10 | 36–38 | 33–35" |
| M | 8–10 | 12–14 | 40–42 | 35–37" |
| L | 12–14 | 16–18 | 44–46 | 38–40" |
| XL | 16–18 | 20–22 | 48–50 | 41–43" |
| XXL | 20–22 | 24–26 | 52–54 | 44–46" |
Frequently Asked Questions
Where do I measure my chest for a t-shirt?
Around the fullest part of your chest, under the arms, with the tape parallel to the floor. Wear a thin shirt or measure on bare skin — never over a sweater.
Should I size up for an oversized t-shirt fit?
Yes — size up by 1 if you want a relaxed, drop-shoulder look. For a fitted tee, match the calculator's recommendation exactly.
How accurate is this calculator?
The calculator uses global average size bands. It gets you within one size for 90%+ of brands. Always cross-check the specific brand's chart for fitted styles.
What if I'm between two sizes?
Size up for relaxed and crew-neck tees, size down for fitted V-necks and ribbed styles. Stretch fabric (5%+ elastane) lets you go down half a size.
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