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Mattress size names are not interchangeable between the US, UK and Europe. Compare the actual width and length—not just labels such as “King” or “Queen”—and confirm the seller’s dimensions for the mattress, bed frame or fitted sheet you plan to buy.
US, UK and European mattress sizes
The following are representative dimensions published by Savoir Beds, not a guarantee that every seller uses the same sizes. Measurements are width × length.
| Market | Size label | Dimensions |
|---|---|---|
| US | Twin | 38 × 75 in |
| US | Twin XL | 38 × 80 in |
| US | Full | 54 × 75 in |
| US | Queen | 60 × 80 in |
| US | King | 76 × 80 in |
| US | California King | 72 × 84 in |
| UK | Single | 90 × 190 cm |
| UK | Double | 140 × 190 cm |
| UK | King | 150 × 200 cm |
| UK | Super King | 180 × 200 cm |
| Europe (examples in the guide) | Single | 100 × 200 cm |
| Europe (examples in the guide) | Double | 140 × 200 cm |
| Europe (examples in the guide) | King | 160 × 200 cm |
| Europe (examples in the guide) | Super King | 180 × 200 cm |
These examples show why a familiar name is not enough to establish fit. Savoir Beds lists a UK King as 150 × 200 cm and a European King as 160 × 200 cm: the European example is 10 cm wider, while both are 200 cm long.
Why size labels can mislead
“King” and “Queen” depend on the market
A US Queen is 60 × 80 in, while the cited UK guide uses King for 150 × 200 cm and European King for 160 × 200 cm. Dreams UK says Queen is not an official UK measurement. Treat size names as market-specific labels, not a universal standard.
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Even regional guides may differ
European Single is not consistent across the cited guides. Savoir Beds gives 100 × 200 cm for its European example, while Which? describes a European Single as 90 × 200 cm—10 cm longer than a standard UK Single. IKEA UK also notes that European sizes differ from standard UK sizes and lists UK Single as 90 × 190 cm and UK Super King as 180 × 200 cm. These sources illustrate regional and guide-level variation; they do not establish one universal European range.
Check the product that needs to fit
Mattresses, frames and fitted sheets are separate products, so confirm dimensions for each rather than assuming a matching label guarantees compatibility. A small size difference can affect linen fit, as Orla Kiely’s bedding guide cautions.
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- Find the actual product dimensions. Check the seller’s listing for width and length, including units; do not rely on “double,” “king” or another name alone.
- Measure the mattress. Use a measuring tape to check its width and length, then compare both figures with the product specification.
- Check frame compatibility. Confirm the frame is specified for the mattress’s dimensions, not merely for a similarly named size.
- Check fitted-sheet compatibility. Match the sheet to the mattress dimensions and confirm the seller’s compatibility details instead of assuming that the same size label will fit.
For a common question such as how big a single, double, king-size, super king or queen bed is, the useful answer is the market and dimensions together—not the label in isolation. A consumer guide presents that question in its bed-size explainer; the product listing remains the key check for a specific purchase.
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