Plus-Size Bra Calculator
A measurement-based starting point for plus-size bra sizing, with US and UK cup labels and fit guidance.
How this plus-size starting point is calculated
This calculator uses the same core measurement relationship as the main bra calculator rather than applying a separate plus-size correction formula.
- Band: the snug underbust determines the even-number band reference.
- Cup: standing bust minus snug underbust determines the cup index.
- Optional measurements: loose, tight, and leaning measurements provide additional fit context but do not get blended into the cup calculation.
- Labels: the same cup index is mapped into the US and UK sequences.
Plus-size garments can use different constructions, proportions, support features, and size ranges. Compare the starting point with the manufacturer's current chart and the actual garment fit.
Frequently Asked Questions
Answers about sizing methods, measurements, and fit considerations.
Does being plus size change the basic bra-size calculation?
The same basic measurements can be used as a starting point. Plus-size ranges may offer different styles, constructions and size charts, so compare your measurements with the specific manufacturer's chart and check the actual fit.