US to UK Bra Band Size Conversion
| US Band | UK Band |
|---|---|
| 32 | 32 |
| 34 | 34 |
| 36 | 36 |
| 38 | 38 |
| 40 | 40 |
Sizing conventions vary by brand and by cut — this table shows the standard published conversion. Always check the garment's own size chart when one is available. See how these tables are compiled.
US and UK bra band sizes are numerically identical — a US 34 band is a UK 34 band — so this specific conversion is really about cup lettering, which is where the two systems actually diverge (see the bra cup size conversion for that half of the picture).
Because the band number doesn't change, a US-to-UK bra purchase mostly hinges on getting the cup letter right; band size alone converting cleanly is one reason bra fit problems more often trace back to cup sizing than to the band.
Frequently asked questions
Does the band number change between US and UK bras?
No — US and UK band sizes use the same number. The cup letter is where the systems diverge; see this site's bra cup size conversion for that part of the fit.