Bra Size Calculator

Calculate Your Size

How to Measure

1

Underbust Measurement

Wrap the measuring tape around your ribcage, just under your breasts. The tape should be snug but not tight. Keep it parallel to the ground. Take a deep breath and exhale before taking the measurement.

Underbust measurement illustration
2

Bust Measurement

Measure around the fullest part of your bust, typically at nipple level. Keep the tape parallel to the ground and loose enough to not compress breast tissue. Stand straight with arms relaxed at your sides.

Bust measurement illustration

Pro Tips:

  • • Wear an unlined bra or no bra for best results
  • • Stand straight and relaxed while measuring
  • • Take measurements twice to ensure accuracy
  • • Round to the nearest whole number

Cup Size Chart

DifferenceCup SizeDescription
1″A1 inch difference
2″B2 inch difference
3″C3 inch difference
4″D4 inch difference
5″DD/E5 inch difference
6″DDD/F6 inch difference
7″G7 inch difference
8″H8 inch difference

The cup size is determined by the difference between your bust and underbust measurements. For example, if your bust measures 3 inches larger than your underbust, your cup size would be C.