Bra Size Calculator: Find Your Perfect Fit Online!

Bra Size Calculator

Bra Size Calculator

Your Bra Size:

Finding the right bra size is crucial for comfort and support. Wearing the wrong size can cause discomfort, poor posture, and even back pain. That’s why we’ve created this Bra Size Calculator to help you quickly determine your perfect fit in just a few simple steps!

Bra Size Calculator Chart (US/UK Cup Sizes)

Difference (in inches)Cup Size
0 – 0.5AA
1A
2B
3C
4D
5DD (E)
6DDD (F)
7G
8H
9I
10J
11K
12L
13M

How to Measure Your Bra Size

To find your correct bra size, you need two key measurements:

Band Size (Underbust Measurement)

  • Wrap a soft measuring tape around your ribcage, just below your bust.
  • Keep it snug but not too tight.
  • Round the number to the nearest even number (e.g., 32, 34, 36).

Bust Size (Fullest Part of Your Bust)

  • Measure around the fullest part of your bust, ensuring the tape is parallel to the ground.
  • Round to the nearest whole number.

Calculate Cup Size

The difference between bust size and band size determines cup size:

  • Cup Size = Bust Measurement – Band Measurement
  • Use the chart below to determine your cup size.