Mattress Firmness by Sleep Style: Quick Guide

Firmness Scale Explained

Mattress firmness runs from 1 (ultra-soft) to 10 (rock-hard). Most shoppers land between 4 and 7.

Side Sleepers

Need a softer surface (4-5) to cushion shoulders and hips. Memory foam or hybrid models with pillow tops work best.

Back Sleepers

Medium-firm (5.5-6.5) keeps the spine neutral. Look for zoned support coils or latex layers.

Stomach Sleepers

Firmer options (7-8) prevent the midsection from sinking, which strains the lower back.

Weight Considerations

• Under 130 lbs: go one level softer than the standard recommendation
• Over 230 lbs: go one level firmer for adequate support

Testing Tips

Lie on the mattress for at least 10 minutes in your usual position. If you feel pressure points after five minutes, the firmness is wrong.