How to Measure Bra Size: Step-by-Step Guide

1. Measure Your Underbust (Band Size)

measurement
  • Wrap a soft measuring tape snugly around your ribcage, just under your bust.
  • Ensure the tape is level all the way around.
  • If it's an odd number, round up.

2. Measure Your Overbust (Bust Size)

  • Wrap the tape around the fullest part of your bust.
  • Keep it flat and not too tight.
  • Subtract band size to determine cup size.
Bra Size Chart
Know Your Right Size. Get The Right Fit.
SIZE (INCH) BUST UNDER BUST OVERBUST (in cms)
CUP A CUP B CUP C CUP D
28 68–70 58–60 72–74 75–76 77–78 79–80
30 73–75 63–67 77–79 80–81 82–83 84–85
32 78–80 68–72 82–84 85–86 87–88 89–90
34 83–85 73–77 87–89 90–91 92–93 94–95
36 88–90 78–82 92–94 95–96 97–98 99–100
38 93–95 83–87 97–99 100–101 102–103 104–105
40 98–100 88–92 102–104 105–106 107–108 109–110
42 103–105 93–97 112–113 114–115
44 108–110 98–102 117–118 119–120

Expert Tips for Taking Correct Bra Size Measurements

  • Always measure without padded bras
  • Stand tall and breathe normally
  • Measure more than once
  • Recheck size every few months

How to Know If Your Bra Fits Perfectly

  • Band: Should sit firmly and evenly.
  • Cups: No gaping or spillage.
  • Straps: Secure without digging.

FAQs Answered by Our innermuller Experts

How do I find my correct bra size?

Use a soft measuring tape or our calculator to get accurate results.

Should a bra fit tight or loose?

It should feel secure, not suffocating.

How to measure bra size at home?

Measure underbust and bust, subtract and match.

How to measure cup size?

Each inch difference equals one cup size.

What happens if I wear the wrong size bra?

Discomfort, posture issues, and poor outfit fit.

Difference between cup size and bra size?

Bra size = band number + cup letter.