The single most common bedding mistake is buying a cover to match the bed. A duvet cover is a case for the duvet, so its job is to match the duvet. Get that right and the bed looks crisp and full every time you make it.
Duvet cover sizes (cm)
| Size | Cover dimensions |
|---|---|
| Double | 150 x 200 cm |
| Queen | 180 x 220 cm |
| King | 200 x 230 cm |
| Super King | 220 x 240 cm |
How to measure your duvet
- Lay the duvet flat on the bed or floor.
- Measure the width edge to edge across the middle, then the length top to bottom down the centre.
- Round up to the nearest size in the chart. An existing cover works too: measure it inside out.
- Between sizes? Size up. A slightly roomier cover drapes better than one that pulls tight over the corners.
Cotton duvet covers to shop
See every colour in the Covaba duvet cover collection.
Fabric and care in brief
Cotton is the breathable all-rounder. Satin adds a cool sheen and a smoother hand. Printed covers such as windowpane check or geometric bring pattern without noise.
Wash cotton and satin cool at around 30°C, turn the cover inside out, and avoid high-heat tumble drying, which is the main cause of shrinkage. Do not overload the machine so the cover can move and rinse freely.
Frequently asked questions
Do I size a duvet cover to the bed or the duvet?
To the duvet. The cover is a case for the insert, so match its width and length, not the mattress.
What size duvet cover for a king bed?
A king duvet takes a 200 x 230 cm cover. For more overhang, size up to a super king at 220 x 240 cm.
What if my duvet is between two sizes?
Size up. A slightly larger cover drapes fuller and is easier to fit than one stretched tight.
How do I wash a cotton duvet cover?
Wash it inside out at about 30°C and skip the high-heat dryer to keep the fit and colour.
Match your duvet to the chart, then choose your colour.
Shop duvet covers →Emily Carter writes about home textiles and interiors for Covaba, focusing on practical sizing and styling advice that works in everyday rooms.
Keep reading: how to choose fitted sheets, the bedroom rug size guide, and browse all bedding.
