US, UK & EU Bedding Size Converter (Why “King” Means Three Different Beds)
A US King is not a UK King. It is not even close — US King measures 193cm wide, while UK King is only 150cm wide. If you’re shopping across borders, use the converter below to match your exact size to its real US, UK, and EU equivalent.
US / UK / EU Bedding Size Converter
Pick your region and size to see the closest real match in the other two regions.
Your equivalents
Why "King" Doesn't Mean the Same Bed in Every Country
Bed size names got standardized separately in the US, UK, and Europe. Nobody coordinated the labels. The result: three regions use the same words for different beds.
The UK doesn't even have a size called "Queen." Its King is closer to a US Queen in width. Meanwhile, EU sizing skips names entirely and just uses centimeter measurements like 140×200 or 160×200.
This causes real problems. Someone moving from the US to London who orders a "King" bed frame gets a bed 43cm narrower than they expected.
Full US, UK & EU Bed Size Conversion Chart
Here's the full picture. We cross-checked it against UK retailers Naturalmat, Simba Sleep, Dreams.co.uk, and Winstons Beds, plus verified US mattress data.
| US Size | US (in) | US (cm) | Closest UK Size | UK (cm) | Closest EU Size |
|---|---|---|---|---|---|
| Twin | 38 × 75 | 96.5 × 190.5 | Single | 90 × 190 | 90×200 |
| Full/Double | 53–54 × 75 | 134.5–137 × 190.5 | Double | 135 × 190 | 140×200 |
| Queen | 60 × 80 | 152.4 × 203.2 | King | 150 × 200 | 160×200 |
| King | 76 × 80 | 193 × 203.2 | Super King | 180 × 200 | 180×200 |
| California King | 72 × 84 | 182.9 × 213.4 | No direct match | — | No direct match |
California King has no true UK or EU equivalent. It's longer and narrower than a Super King, so expect to special-order bedding if you bring one overseas.
The #1 Mistake: US King Is Not UK King
This is the single most costly mix-up in cross-border bed shopping. A US King is 193cm wide. A UK King is only 150cm wide — 43cm narrower.
The UK King actually lines up with a US Queen (152.4cm wide), not a US King. If you buy "King" sheets in London expecting US King coverage, they'll be too small.
Going the other direction is just as risky. Order US King sheets for a UK King bed, and you'll have loose, baggy fabric pooling at the sides.
UK Bed Sizes Explained
The UK uses six standard names, verified across multiple UK bedding retailers. They run Small Single, Single, Small Double, Double, King, and Super King.
| UK Size Name | Width × Length (cm) | Width × Length |
|---|---|---|
| Small Single | 80 × 190 | 2'6" × 6'3" |
| Single | 90 × 190 | 3'0" × 6'3" |
| Small Double | 120 × 190 | 4'0" × 6'3" |
| Double | 135 × 190 | 4'6" × 6'3" |
| King | 150 × 200 | 5'0" × 6'6" |
| Super King | 180 × 200 | 6'0" × 6'6" |
Notice the length jump. Single, Small Double, and Double all run 190cm long. King and Super King step up to 200cm. That's a genuine UK convention, not a data error.
EU/Continental Sizing Explained
Europe skips names altogether. Beds are just labeled by their centimeter dimensions, like 140×200 or 160×200. Once you know your width, the size is self-explanatory.
| EU Convention | Width × Length (cm) | Approx. Equivalent |
|---|---|---|
| 90×200 | 90 × 200 | Slightly longer than UK Single |
| 140×200 | 140 × 200 | Slightly wider than UK Double |
| 160×200 | 160 × 200 | Wider than UK King |
| 180×200 | 180 × 200 | Matches UK Super King |
| 200×200 | 200 × 200 | Larger than any standard UK/US size |
That last one, 200×200, is common in Germany and Scandinavia. It's often built from two joined single mattresses rather than one solid frame.
Duvet Size Conversion: UK Tog and Size vs. US Comforter
UK shoppers think in duvet sizes that match their mattress names: Single, Double, King, Super King. US shoppers think in comforter sizes tied to Twin, Queen, and King.
The underlying mattresses differ in width. So a UK Double duvet and a US Full comforter aren't identical either, even though both cover a similarly-named mid-size bed. Always match your duvet to your actual mattress width in cm, not the size label alone.
Warmth also works differently. The UK rates duvets by tog (a warmth measure), while the US rates comforters mostly by fill weight and material. A mid-tog UK duvet (around 10.5 tog) suits most three-season sleeping, similar to a standard-weight US comforter.
IKEA Sizing: The Fourth System
IKEA runs its own sizing standard that matches neither US nor UK/EU conventions cleanly. Its "Double" is 150×200cm — wider than a UK Double, closer to a UK King in width.
IKEA's "King" measures 240×220cm, built for two joined mattresses side by side. That's larger than any single-piece UK, US, or standard EU bed. If you own IKEA furniture, check IKEA's own size chart before buying third-party sheets.
Frequently Asked Questions
Is a US King the same as a UK King?
No. US King is 193cm wide; UK King is 150cm wide. The UK King is actually closer in size to a US Queen.
Will US Queen sheets fit a UK King bed?
Close, but not exact. US Queen is 152.4cm wide and UK King is 150cm wide, so fitted sheets often work. Flat sheets and duvet covers may run slightly long, since US lengths differ from UK's 200cm.
What's the difference between a UK Double and a US Full?
They're close in width. UK Double is 135cm, US Full is 134.5–137cm. UK Double runs 190cm long versus 190.5cm for US Full — near enough to be considered equivalent.
What size is a European 160×200cm mattress in US terms?
It sits between a US Queen (152.4cm) and US King (193cm) in width. It's shorter than both in length, so there's no exact US match.
Do IKEA sheets fit standard, non-IKEA beds?
Not reliably. IKEA's Double (150×200cm) and King (240×220cm) don't match UK, US, or standard EU dimensions. Always check IKEA's own chart before buying non-IKEA bedding for an IKEA bed frame.
Once you know your converted size, check our bed sheet size calculator for exact fitted and flat sheet dimensions. Or use the duvet cover size calculator to match tog rating and cover size to your mattress.
