Calculating Bra Size

This calculator estimates your bra size using your bust measurement and band size. Measure carefully to the nearest ¼ inch or ½ cm for a more accurate recommendation.

Measurement Unit Band Size (Under Bust) - inches Bust Size (Fullest Part) - inches

Your bra size will appear here

Bra Measuring Guide

Follow these steps to measure your bra size correctly:

Step 1: Measure your band size
Wrap a measuring tape around your rib cage directly under your bust. Keep the tape level and snug but not tight.
Step 2: Measure your bust size
Measure around the fullest part of your breasts while keeping the tape relaxed.
Step 3: Calculate cup size
Subtract your bust measurement from your band measurement. The difference determines your cup size.
Example:
Band: 34 inches
Bust: 38 inches
Difference: 4 inches → Cup size D
Result: 34D

Note: This calculator provides an estimate. Bra sizing can vary between brands, styles, and countries.