Bra Size Calculator
Estimate your bra band and cup size from your measurements.
Measurements should be snug but not tight. Sizing varies between brands and countries — treat this as a starting estimate and try styles on where you can.
About Bra Size Calculator
Bra Size Calculator is a free online tool that lets you estimate your bra band and cup size from your measurements — straight from your browser, with no software to install, no sign-up, and no watermarks. It runs on Windows, Mac, Linux, Android, and iOS, so you can use it on whatever device you happen to have to hand.
Enter your figures and Bra Size Calculator applies the right formula instantly, showing a clear breakdown so you understand how the result is reached — not just the final number. Adjust any input to compare scenarios side by side. Files and data are processed securely and removed automatically afterwards, and many steps run entirely on your own device for extra privacy. Because Bra Size Calculator is completely free and unlimited, you can use it as often as you need for work, study, or personal projects.
Benefits of Bra Size Calculator
Frequently asked questions
How does Bra Size Calculator work out the result?
Enter your values and Bra Size Calculator applies the relevant formula instantly, showing a clear breakdown alongside the final figure.
Can I compare different scenarios?
Yes — change any input and the result recalculates immediately, so you can weigh up options side by side.