How to Choose the Perfect Pillow Height for Your Sleep Position

You’ve probably heard that pillow firmness matters. But what most people don’t realise is that pillow height — also called loft — has an even bigger impact on whether you wake up refreshed or in pain. The wrong loft keeps your spine out of alignment all night, and no amount of sleep will undo that damage. Here’s how to find the right height for your sleep position.

Why Pillow Height Matters

When you lie down, your head needs to stay at a neutral position — meaning your spine should form a straight line from your tailbone up through your neck. If your pillow is too high, your neck bends upward. Too low, and it droops down. Both cause muscle strain, poor circulation, and that infamous morning stiffness.

Pillow Height by Sleep Position

Side Sleepers: High Loft (4–6 inches)

Side sleepers have the most distance to fill — from the mattress to the ear. Most people need a pillow that is 4 to 6 inches tall to keep the head aligned with the spine. The exact measurement depends on your shoulder width: broader shoulders need more loft, narrower shoulders need less. A pillow that’s too flat will tilt your head downward all night, straining the muscles on the upper side of your neck.

Back Sleepers: Medium Loft (3–4 inches)

Back sleepers need enough height to support the natural curve of the neck, but not so much that the chin is pushed toward the chest. A medium loft of 3 to 4 inches is ideal. The pillow should fill the gap between the mattress and the base of the skull without forcing the head forward. Memory foam and shredded foam pillows work especially well here because they conform to the neck curve.

Stomach Sleepers: Low Loft (1–2 inches, or none)

Stomach sleeping is the hardest position on the spine, and a thick pillow makes it significantly worse by forcing the neck to rotate sharply sideways. If you sleep on your stomach, use the thinnest pillow possible — 1 to 2 inches — or experiment with no pillow at all. Some stomach sleepers find placing a flat pillow under the pelvis (instead of under the head) dramatically reduces lower back pain.

How to Measure Your Ideal Loft at Home

Stand against a wall with your normal posture. Have someone measure the distance from the wall to the side of your neck (for side sleeping) or the back of your neck (for back sleeping). That number, in inches, is your ideal pillow loft starting point. Adjust from there based on feel — if you wake up with neck pain, go up or down half an inch at a time until you find the sweet spot.

Signs Your Pillow Height Is Wrong

• You wake up with neck or shoulder pain that fades after an hour
• You find yourself folding or flipping the pillow at night
• You place your arm under the pillow to prop your head up
• Your jaw or temple feels sore in the morning
• You snore more than usual

What About Combination Sleepers?

If you switch positions throughout the night, look for an adjustable fill pillow — one where you can add or remove material to change the loft. Shredded memory foam and shredded latex pillows are ideal because the fill can be adjusted to your preference. Several of our top picks in the recommended products page offer this feature.

Further Reading

• How to Choose the Right Pillow for Your Sleep Position
• Pillow Firmness Guide
• Our top pillow recommendation →