Not sure what your bra size is? Follow the steps below to find out how to calculate your bra size.
Measure while wearing a non-restrictive, non-padded, underwire free bra. Use a flexible seamstress measuring tape to measure right under your bust. Make sure the measuring tape is evenly level around your body. If you get an odd number measurement add 5 inches and if you get an even number add 4 inches. This will be your band size calculation. (For example, if you measured 32 inches your band size is 36. If you measured 33 inches, your band size is 38).
Measure loosely around your back to the front of the fullest part of your breasts where your nipples are, keeping the measuring tape straight and even. Round this number to the nearest whole number. (Example – 36.5 round up to 37″). Now take your bust size measurement and subtract from it your band size measurement. (For instance, if you measured a 34 band size and a 37 bust size it would be 37″-34″=3″. The number 3 would be your cup size. 3″ is equal to a C Cup).
The cup size is determined by the number of inches in difference from the band measurement and the bust measurement. Each inch of difference is equivalent to another cup size.
Use the chart below to see the difference in inches each cup size corresponds to:
Inches Difference = Cup Size
0″ = AA Cup
1″ = A Cup
2″ = B Cup
3″ = C Cup
4″ = D Cup
5″ = DD Cup
6″ = DDD/F Cup
7″ = G Cup