The right duvet, fitted sheet and flat sheet for your mattress and its depth.
How this works
A duvet should cover the mattress top plus its depth on both sides, plus 10 to 35 cm of drape depending on the look you want. Couples often size up one so nobody loses the covers. Fitted sheets need a pocket 5 cm deeper than the mattress plus any topper.
Questions people ask
How do I use the Bedding and Duvet Size Finder?
Fill in the fields, starting with “Mattress”, “Mattress depth” and “Topper thickness”, and change any other options that match your home. The answer, a drawing and practical tips update as you type, and the Copy link button saves your numbers in a link you can share.
Is the Bedding and Duvet Size Finder free?
Yes. The Bedding and Duvet Size Finder is free, with no sign-up, and works on phones, tablets and computers. The results are estimates to help you plan, so check with a qualified professional before structural, electrical, gas or plumbing work.