Bra Size Calculator
Fit Calculator
Enter two measurements in inches, taken with a soft tape while wearing a non-padded bra. Your size updates as you type.
Get ready
Remove your top and wear your best-fitting, non-padded bra. Stand upright with shoulders relaxed.
Around your ribcage, directly under the bust. Snug, flat across the back and parallel to the floor.
Around the fullest part of the bust, arms at your sides. Just snug enough to stay in place without compressing.
Measurements are a starting point; fit varies by style. Band rounds to the nearest even inch (an exact odd number rounds up). Overbust rounds to the nearest whole inch. Each inch of difference is one cup size.
Size Chart
Cup columns show the overbust measurement, in inches, for each size. Overbust = band + cup difference. Tap any size to load it into the calculator.
Bands 30–46, cups A–I. All measurements in inches.