Mattress Firmness Guide: How to Choose (UK)
Soft, medium or firm? Choosing the wrong mattress firmness is one of the most common sleep mistakes. This UK guide explains the firmness scale and which suits you.
Mattress Firmness Scale Explained
Mattresses are typically rated 1-10, from extra-soft to extra-firm. Most UK sleepers suit the 4-7 range. Your ideal firmness depends on sleep position, body weight, and personal preference.
Soft Mattresses: Best For
Side sleepers and lighter individuals (under 60kg). Soft mattresses cushion shoulders and hips, keeping the spine aligned.
Medium Mattresses: Best For
The most popular choice. Suits combination sleepers and average-weight adults. Good balance of comfort and support.
Firm Mattresses: Best For
Back and stomach sleepers, plus heavier individuals (over 100kg). Prevents hips sinking too deep.
Firmness by Sleep Position
- Side sleepers: Soft to medium (4-6)
- Back sleepers: Medium to firm (5-7)
- Stomach sleepers: Medium-firm to firm (6-8)
Pairing with the Right Bed
Your bed base affects feel too. A solid platform firms things up; sprung slats add give. Check our UK bed sizes guide to match your mattress to your frame. Ready? Shop our beds.