Men's Shirt Size Converter

Men's shirts from Asian retailers require careful size selection because the fit differences affect multiple dimensions simultaneously. Chest circumference, shoulder width and sleeve length all run smaller in Asian sizing — a US men's Large needs an XL to 3XL depending on the brand and style. T-shirts are more forgiving due to stretchy fabrics, but dress shirts and button-downs require precise sizing. Our converter maps your US men's shirt size to the correct equivalent at Shein, Temu, AliExpress, Zara and H&M. The biggest adjustment is for Asian marketplaces, where sizes run two or more sizes small. Zara runs about half a size small with their slim European cut, while H&M is generally true to size. For dress shirts, always check neck circumference and sleeve length measurements.