🛌 Mattress Firmness Finder
Tell us how you sleep and roughly what you weigh, and get a suggested firmness on a 1–10 scale to anchor your mattress shortlist.
🛌 Find Your Ideal Firmness
What is a Mattress Firmness Finder?
A mattress firmness finder translates how you sleep into a firmness rating on the industry-standard 1–10 scale. It starts from your sleep position — side, back, stomach, or combination — then adjusts for body weight, since heavier sleepers sink further and need firmer support.
The result is a single number and a plain-language label, from soft to firm, to anchor your shopping. It is a starting point, not a prescription — comfort is personal, so confirm the feel with a sleep trial.
❓ Frequently Asked Questions
How does sleep position affect mattress firmness?
Side sleepers usually want a softer surface so the shoulder and hip can sink in and keep the spine aligned. Back sleepers do well on a medium-firm feel that supports the lumbar curve, and stomach sleepers generally need firmer support to stop the hips dropping and the lower back arching. The finder uses your position as the starting point.
How does body weight change the right firmness?
Heavier bodies press deeper into a mattress, so a model that feels medium to a light person can feel soft to them — they tend to want a firmer rating for support. Lighter sleepers do not compress the comfort layers as much, so a softer feel reads as supportive. The finder nudges the suggestion firmer or softer based on your weight.
What do soft, medium, and firm actually mean?
On a 1–10 scale, soft is roughly 1–3 (deep contouring, plush feel), medium is about 4–5, medium-firm is 6–7 (the most popular range, balancing support and cushioning), and firm is 8–10 (minimal sink, very supportive). Most adults are comfortable in the medium to medium-firm band.
Is the suggested firmness a guarantee of comfort?
No — it is a well-reasoned starting point, not a personalized prescription. Comfort also depends on the mattress materials, your body shape, any pain points, and whether you share the bed. Use the suggestion to narrow your options, then rely on a sleep trial or in-store test to confirm the actual feel.