Pillow height calculator

Get a starting range for pillow height from your sleeping position, shoulder width and mattress give. Then measure it on your own bed, because compression and mattress sink change the fit. This is a comfort estimate, not clinical advice.

How to use the estimate

Put the pillow on your mattress and lie in your normal position. Your head should sit roughly level with the rest of your spine, not tipped up or down. If you repeatedly add an arm under the pillow, try the upper end of the range; if you push it away, try lower.

The range shifts for mattress give: a soft mattress lets the shoulder sink, so you need less height; a firm mattress keeps the shoulder higher, so you may need a little more.

Limits

This tool cannot know your exact body or bed. It gives a starting point to test, not a guaranteed fit, and it does not treat pain. See our pillow height and mattress-fit guide for the full method, and if neck or shoulder discomfort persists, or comes with numbness or weakness, seek medical advice.

Common questions

How do I measure pillow height?

Height is best judged after your head has compressed the pillow, not the loft printed on the box. Use the calculator as a starting range, then try a pillow at that height in your normal sleeping position on your own mattress.

What height should a side sleeper’s pillow be?

Side sleepers usually need a higher pillow than back or stomach sleepers because it has to fill the gap left by the shoulder. The exact height depends on shoulder width and how far the shoulder sinks into the mattress, which is why the calculator returns a range rather than one number.

Does mattress firmness change pillow height?

Yes. A soft mattress lets the shoulder sink deeper, so the pillow needs less height; a firm mattress keeps the shoulder higher, so a slightly higher pillow may fit better. Use the mattress setting to adjust the range.

Is this a medical recommendation?

No. This is a research-based starting estimate for a comfort choice, not clinical advice. If you have persistent neck or shoulder pain, or numbness, pins and needles or weakness, seek medical advice rather than relying on a pillow.