What this calculator does
The Bikini Calculator suggests a swimwear size based on your bust, waist, and hip measurements, using a standard women’s swimwear sizing chart.
How the calculation works
Each size band (XS through XXL) has a maximum bust, waist, and hip measurement. The calculator checks your three measurements against each band in order and recommends the smallest size that comfortably fits all three. If your largest measurement exceeds every band, it suggests sizing up further.
This tool is for general shopping guidance only. Sizing varies between brands and styles, so always check the specific brand’s size chart and consider your own fit preference before buying.
Last reviewed August 2026