Your bed size
200 × 200 cm
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SingleSuper king
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Pick your bed to get the right duvet size in cm and inches — or compare UK, EU and US sizes.
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Every UK duvet size in centimetres and inches, the bed it fits, and the closest US comforter. Tip: buy the duvet cover to match the duvet, not the bed.
| Duvet | Fits bed | Size (cm) | Size (inches) | US comforter |
|---|---|---|---|---|
| Single | Single | 135 × 200 | 53 × 79 | ≈ Twin |
| Double | Small double & double | 200 × 200 | 79 × 79 | ≈ Full / Queen |
| King | King | 225 × 220 | 89 × 87 | ≈ Queen / King |
| Super King | Super king | 260 × 220 | 102 × 87 | ≈ King |
| Emperor | Emperor | 290 × 235 | 114 × 93 | ≈ Cal King + |
Quick answers before you buy.
A double bed takes a 200 × 200 cm double duvet (about 79 × 79 in). If two of you compete for the cover, size up to a king duvet (225 × 220 cm) for more each side.
Many people size up by one — a king duvet on a double bed, say — for extra drape and to stop cold gaps. Just make sure your duvet cover matches the duvet size, not the bed size.
The UK measures the duvet itself (king = 225 × 220 cm). The US sells comforters sized to the bed (twin, full, queen, king) and they run differently — a UK king duvet is closest to a US queen/king comforter. Always check the cm/inch dimensions, not just the name.
A UK king duvet is 225 × 220 cm (about 89 × 87 in). A super king is 260 × 220 cm (about 102 × 87 in).
This catches almost everyone out: a "double" duvet is not the width of a double bed. Duvets are made deliberately larger so they drape over the sides and tuck around you — a double duvet is 200 cm wide, but a double bed is only 135 cm.
That's why you always buy the duvet cover to match the duvet, never the bed. It also means sizing up is a genuine option: plenty of couples put a king duvet (225 cm) on a double bed so neither person gets left in the cold halfway through the night.
More couples are ditching the shared duvet for two smaller ones on the same bed — the so-called Scandinavian sleep method. Each person uses a single duvet (135 cm) on a double or king bed, so nobody steals the cover and you can each pick your own tog.
It makes the bed a little less "hotel neat", but for light sleepers and couples who run at different temperatures it's a genuine fix. You'll want a king or super king so the two singles sit side by side without a cold gap down the middle.
Skip the duvet entirely for babies under 12 months — use a tog-rated sleeping bag instead. From around one year, a cot-bed duvet is roughly 120 × 150 cm in a low 4–4.5 tog.
A junior or toddler bed takes the same cot-bed size, or a single (135 × 200 cm) if you'd rather. Keep the tog low either way — little ones overheat easily, and a 4.5 tog over a warm sleepsuit suits most rooms.