UK vs US Bed Sizes: Why They're Different
UK vs US Bed Sizes: Why They're Different
Written by the Valtiva Team
If you're moving between the UK and US, or simply shopping for bedding from an American retailer, the size names don't translate the way you'd expect — even when they sound identical.
The Real Comparison
| UK Size | UK Dimensions | Closest US Equivalent | US Dimensions |
|---|---|---|---|
| Single | 90 x 190cm | Twin | 97 x 191cm (wider, slightly longer) |
| Double | 135 x 190cm | Full | 137 x 191cm (very close, near-identical) |
| King | 150 x 200cm | Closer to Queen than King | US King is noticeably larger than UK King |
| Super King | 180 x 200cm | Closest to US King | US King is still somewhat larger |
The Genuinely Confusing Part: "King" Means Different Things
This is the detail that catches people out most often: a UK King is meaningfully smaller than a US King — it actually sits closer in size to a US Queen. If you're used to sleeping in a "King" in the US, a UK King won't feel the same; you'd likely want a UK Super King instead for something closer to what you're used to.
Why the Names Never Aligned
Bedding standards in the UK and US evolved largely independently, shaped by different regional manufacturing traditions and, historically, different measurement systems. The result is two systems that share some naming vocabulary without ever standardising the actual dimensions behind those names.
A Genuinely Practical Warning if You're Buying Bedding Internationally
Because names don't translate reliably, always shop by exact centimetre or inch dimensions rather than the size label alone — this matters even more for fitted sheets and duvet covers than for the mattress itself, since a US sheet on a UK mattress can genuinely sag or bunch rather than fit cleanly.
If You're Shopping With Us
All VALTIVA sizing follows standard UK dimensions — see our full UK Bed Size Guide for exact measurements before you order.
Moving from the US and unsure which UK size to choose? Get in touch and we'll help you find the closest match.