To calculate your bra size, you will need a soft measuring tape, and for best results, either remove your bra or wear the bra that fits you best. Measure directly underneath your breasts on the rib cage, making sure to keep the tape level all the way around your torso.
Pull the two sides together until they meet and lie flat against your body, but be careful not to pull too tightly. The tape should feel snug, but not constricting. Enter this as your Band Measurement. Next, measure around the fullest part of your breasts to find your Bust Measurement.
Do not round any of these measurements as the calculator accepts decimals. Please note: Our calculator only offers a starting point size. There is no substitute for a professional fitting or for trying on bras to see which styles and sizes work best for you.
Our calculator was the first to allow centimeter conversion as well as decimal input. Calculator is ©W2 Consulting Services, LLC under closed-source. For licensing, please contact firstname.lastname@example.org.