OceanCalc

Bra Size Calculator

Find your perfect bra size with band and bust measurements.

Measurements
Use a soft measuring tape for accurate results
inches

Measure snugly around your ribcage, just under your bust

inches

Measure around the fullest part of your bust

How to Measure
  1. Band: Wrap the tape snugly around your ribcage, just under your bust. Keep it level and parallel to the floor.
  2. Bust: Measure around the fullest part of your bust, keeping the tape straight across your back.
  3. For best results, wear an unpadded bra or no bra while measuring.
Fit Tips
  • The band should be snug but not tight
  • You should be able to fit two fingers under the band
  • Straps shouldn't dig in or slip off
  • The center gore should lie flat against your chest
  • No spillover or gapping in the cups

Your Size

34C

Band: 34 • Cup: C

Sister Sizes
Same cup volume, different band

Tighter Band

32D

Your Size

34C

Looser Band

36B

Cup Size Chart
0-1" differenceAA
1" differenceA
2" differenceB
3" differenceC
4" differenceD
5" differenceDD/E
6" differenceDDD/F