Convert shirt sizes between XS, S, M, L, XL, XXL, chest measurements, neck measurements, inches, centimeters, and general US, UK, EU, and international shirt size references.
Inches to centimeters:
cm = inches × 2.54
Centimeters to inches:
inches = cm ÷ 2.54
Chest to letter size:
Use chest range to estimate XS, S, M, L, XL, or XXL.
Dress shirt sizing:
Usually neck size × sleeve length.
Shirt size conversions are useful for t-shirts, dress shirts, button-down shirts, polos, work shirts, uniforms, jackets, athletic shirts, online shopping, international size charts, and inch-to-centimeter measurement comparisons.
Use this converter as an estimate, then check the brand’s official size chart before buying.
Your result estimates a shirt size from the measurement entered. The converter shows an approximate letter size, chest measurement in inches and centimeters, neck size estimate, sleeve length reference, and fit note.
Shirt sizes are not exact across all brands. Fit can change based on cut, fabric, shrinkage, stretch, shoulder width, body shape, and whether the shirt is slim, regular, relaxed, athletic, or oversized.
Compare your chest measurement to a general size range. For example, a 38–40 inch chest is often around a medium.
A 40 inch chest is commonly around a medium, but some brands may place it near the top of medium or the start of large.
Dress shirts often use neck and sleeve measurements. For example, 16 x 34 usually means a 16 inch neck and 34 inch sleeve.
No. Shirt sizing varies by brand, country, fit style, fabric, and cut. The brand’s size chart is the best final reference.
Multiply inches by 2.54. For example, a 40 inch chest is 101.6 centimeters.