Bra Size Calculator
Calculate your accurate bra size for perfect comfort and support. Determine your band and cup size based on underbust and bust measurements.
Step 1: Body Measurements
How to Measure Correctly
Underbust: Measure snugly around your rib cage, directly under your breasts. Bust: Measure loosely around the fullest part of your bust.
Step 2: Fit Preferences
Understanding Bra Sizing
Band size is based on your underbust measurement. Cup size is determined by the difference between your bust and underbust measurements.
Bra Size Results
Summary
Sister Sizes
Breakdown
Your Recommended Bra Size
34C
Based on 34″ underbust and 38″ bust
Band Size
34
Cup Size
C
Difference
4″
Fit Type
Regular
Sister Sizes Comparison
| Sister Size | Band Size | Cup Size | Fit Characteristics |
|---|
Cup Size Breakdown
Bra Size Calculation Formula
Band Size = Underbust Measurement (rounded up to nearest even number)
Cup Size = Bust Measurement – Band Size
Cup sizes: A = 1″, B = 2″, C = 3″, D = 4″, DD/E = 5″, DDD/F = 6″, G = 7″, etc.
Need Professional Bra Fitting Help?
Connect with our lingerie experts for personalized fitting advice, style recommendations, and comfortable bra solutions.
Get Professional Fitting