US to UK Swimwear Size Conversion
| US | UK |
|---|---|
| 4 | 8 |
| 6 | 10 |
| 8 | 12 |
| 10 | 14 |
| 12 | 16 |
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.
A US 8 swimsuit becomes a UK 10 — swimwear doesn't run its own separate national scale, it just borrows the same two-size gap that applies to dresses and tops.
UK swimwear retailers commonly sell separates (top and bottom sized independently) rather than fixed one-piece sizing, so a converted number is really two numbers in practice — check top and bottom against the brand's own chart rather than assuming one UK size covers both.
Frequently asked questions
Does a UK swimwear size cover both the top and bottom?
Not always — many UK brands sell bikini tops and bottoms in independent sizes, so the converted number from this chart may only be a starting point for one piece, not a guarantee for a mismatched-body two-piece.