Find your ideal mattress firmness on the 1 to 10 scale from your weight, sleep position and back health.
How this works
Side sleepers suit about 4 to 5 out of 10, back sleepers 6, stomach sleepers 7. Under 60 kg go about 1 point softer, over 105 kg about 1.5 points firmer. Studies show medium-firm (6 to 7) is best for lower back pain.
Questions people ask
How do I use the Mattress Firmness Finder?
Fill in the fields, starting with “Your weight”, “Main sleep position” and “Feel you like”, 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 Mattress Firmness Finder free?
Yes. The Mattress Firmness 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.