Using the calculator
Enter Measurement unit, Snug underbust, Full bust. Estimate a starting US bra band and cup size from snug underbust and full bust measurements.
FASHION & SEWING
Bra Size Calculator
Estimate a starting US bra band and cup size from snug underbust and full bust measurements.
Band size—
Bust difference—
Estimated US bra size—
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How to use this calculator
Reading the result
The result shows a starting US bra band and cup size from snug underbust and full bust measurements.
How it is calculated
The calculator rounds the underbust to a nearby even band and estimates cup from the bust minus band difference. Brand methods and cup progressions vary.
Results are estimates based on the values entered. Review the Methodology and Calculator Disclaimer for important limitations.