Discover Your Perfect Fit
Stop settling for "close enough." Our modern calculation method helps you find your benchmark size in seconds, designed for real comfort and support.
Find Your Starting Size
Enter your measurements below. We use the modern +0 method for maximum accuracy and support.
How to Measure
Finding your size requires two simple measurements. Use a soft tape and wear your best-fitting non-padded bra.
Measure snugly around your ribcage, directly under your bust.
Measure loosely around the fullest part of your bust.
Signs of a Bad Fit
- The band rides up your back
- Spillage over the top or sides
- Straps falling or digging in
- The center gore doesn't sit flat
Everything You Need to Know
How to calculate bra size at home
Calculating your bra size at home is a simple two-step process that requires only a soft measuring tape and a mirror. By subtracting your band size from your overbust measurement, you can easily determine your starting cup size.
Is this calculator accurate?
Our algorithm uses the modern +0 method, which prioritizes band support. While every brand fits differently, this provides the most reliable starting point in the industry.
Sister Size Chart
| Your Size | Smaller Band Option | Larger Band Option |
|---|---|---|
| 32C | 30D | 34B |
| 34D | 32DD | 36C |
| 36DD | 34E | 38D |
| 38E | 36F | 40DD |
Guides & Articles
Master the art of the perfect fit with our latest research.
Best Measuring Tape for Bra Size Calculator
Stop guessing and learn the right way to measure your underbust and overbust for a perfect fit.
The Ultimate Guide to Measuring Your Bra Size
Stop guessing and learn the right way to measure your underbust and overbust for a perfect fit.
Pregnancy Bra Size Calculator
Stop guessing and learn the right way to measure your underbust and overbust for a perfect fit.