Bikini Calculator

Find bikini top size from bust and underbust.

Bust

Underbust

Size 30 DD/E

Step-by-step with your numbers:

1. Values used:

2. Bust = 36

3. Underbust = 30

4. Size = 30 DD/E

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Estimate bikini top size from bust and underbust in inches.

The math behind it

cup: difference in inches: 1=A, 2=B, 3=C, 4=D.

Bikini vs bra?

Similar sizing — bands usually a bit looser in swimwear.