Bra Size Calculator

The bra size calculator helps you choose the right bra at various measurements in inches and centimeters based on sizing standards. So, enter the bust and band size and click calculate.

Bust Size

Band Size

How To Calculate Accurate Bra Size?

To calculate the accurate bra size, follow the steps below:

• Measure your band size by wrapping a measuring tape around your ribs, just below your bust. Round up to the nearest whole number.
• If the number is even, add 4 inches; if odd, add 5 inches. This is your band size.
• Measure your bust at the fullest point.
• Subtract the band size from the bust measurement.
• Each inch difference equals one cup size (for example, 1 inch = A, 2 inches = B, etc.).
• Combine your band size with the cup letter, for example, 34C, this is your bra size.

But, to use this calculator, enter the overbust and underbust measurements. Select the country and click on the calculate button. You will get the bra size in inches as well as centimeters.

USA Standard Bra Size Chart:

Note: Cup size is calculated by the difference between bust size and band size, for example, a 34 inch band and a 36 inch bust equals a B cup. Adjust for a larger or smaller size accordingly.

UK Standard Bra Size Chart:

Here is the basic UK standard bra size chart for reference:

Note: The UK bra sizing system uses double letters for intermediate cup sizes, such as DD, FF compared to the US system. Cup size is calculate by the difference between the bust measurement and the band size. Adjust cup size accordingly for a larger or smaller size.