US King comforter size
264 × 244 cm
104 × 96 in · North America · fits a 193 cm King bed
About this size
The American king comforter at 104 × 96 inches — 264 cm wide, against 225 for a UK king duvet. A British king cover on an American king bed leaves the mattress showing on both sides.
How much it hangs over
A comforter is not the size of the bed and is not meant to be. This one is 71 cm wider than the mattress, so it drops 35.6 cm on each side.
| Comforter width | 264 cm · 104 in |
| Length | 244 cm · 96 in |
| Mattress width | 193 cm |
| Overhang per side | 35.6 cm |
| Area | 6.4 m² |
Under about 25 cm of overhang the cover rides up as soon as anyone turns over, which is the real complaint behind "the duvet is too small" — usually it is the right size for the bed and the wrong size for two people.
The same name, different bedding
A United Kingdom King is 225 × 220 cm — 39 cm narrower than this one. The names match and the bedding does not, which is the same collision the mattress sizes have.
Nearest sizes
| Size | Region | Dimensions | vs this |
|---|---|---|---|
| California King | North America | 264 × 254 cm | 0 cm wide |
| Super King | United Kingdom | 260 × 220 cm | -4 cm wide |
| Emperor | United Kingdom | 290 × 235 cm | +26 cm wide |
| King | United Kingdom | 225 × 220 cm | -39 cm wide |
| Queen | North America | 224 × 244 cm | -41 cm wide |
| Full | North America | 206 × 224 cm | -58 cm wide |
Frequently asked questions
What size is a US King comforter?
264 × 244 cm, or 104 × 96 inches.
Why is a King comforter wider than a King bed?
Because it has to hang over the sides. The bed is 193 cm wide and the comforter is 264, which leaves 35.6 cm on each side. Less than about 25 cm and the cover rides up and exposes the mattress whenever anyone turns over.
Is a King comforter the same everywhere?
No. A United Kingdom King is 225 × 220 cm, against 264 × 244 here — a difference of 39 cm in width. Bedding bought under the same name in the other country will not fit.
What size duvet cover do I need?
The same as the duvet: 264 × 244 cm. Covers are sold to match the insert, not the bed — buying a cover by bed size is the usual reason one arrives too small.