What Is the Right Pillow Height?
The right pillow height is the one that keeps your head and neck in a neutral line with your spine while you sleep. That height differs from person to person, because it depends on your shoulder width, neck, sleeping position and mattress.
Key takeaways
- There is no single correct pillow height, just as there is no single shoe size. The gap between your head and the mattress is different for each body.
- Shoulder width, neck circumference, neck height, sleeping position and mattress firmness all change the height you need.
- A free measurement at a provider near you replaces guesswork with numbers.
Why does pillow height matter?
A pillow fills the space between your head and the mattress. If it is too high, your neck bends sideways or forward. If it is too low, your head drops toward the mattress. Either way, your neck muscles work through the night instead of resting.
A small pilot EMG study of 15 adults found that a pillow height matched to shoulder width produced the lowest neck and shoulder muscle activity in side sleeping (Jiao et al., 2025). The study was small and tested adults without neck problems. It shows an association with muscle activity, not a proven cure for neck pain. We cover it in side sleeping, shoulder width and pillow height.
What changes the height you need?
- Shoulder width: wider shoulders leave a bigger gap on your side.
- Neck circumference and neck height: these show how much support your neck needs.
- Sleeping position: side, back and stomach sleepers need different heights. Use the position you fall asleep in. If you are unsure, choose side.
- Mattress firmness: on a soft mattress you sink deeper. If you do not know your mattress, choose medium.
Body weight is not part of the calculation. A heavier person sinks deeper into the mattress and may need a lower pillow, so the fit should be checked on the pillow.
If you have scoliosis, our guide Pillow for Scoliosis: How to Choose a Pillow Height That Fits Your Body explains how your body shape plays into pillow height.
Is my current pillow the wrong height?
Waking up stiff is one sign, but not proof. Our guide on how to tell if your pillow is the wrong height lists what to look for. A pillow will not fix every cause of neck pain. If you have pain that is severe, getting worse or spreading into your arm, see your own provider first.
How does Pillowise choose a height?
Pillowise picks one of 7 sizes from three measurements (shoulder width, neck circumference and neck height), plus your sleeping position and mattress firmness. The Pillowise algorithm indicates the right size for about 95% of people. Your provider checks how you lie on the pillow and adjusts if needed, for example during pregnancy. See what happens in a pillow fitting. If you want a wider look at what makes a pillow fit, read Sleep Easy Pillow: What to Look for in a Pillow That Fits.
Give the pillow 7 to 10 days to adjust. If it does not suit you, you can exchange it for another size or return it for a refund within 30 days of purchase. Return shipping is paid by you.
Find a provider near you
Pillowise is sold through licensed chiropractors, physical therapists and massage therapists. The measurement is free at every provider. You can also try our pillow height calculator first.
Find a provider near you for a free measurement.
Providers: chiropractors, PTs and LMTs can register as a reseller on our provider page.
Thijs van der Hilst, physiotherapist
Co-founder of Pillowise
