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SleepSetupCalc

Bedding

Sheet Pocket Depth Calculator

Last updated Researched from published specifications and owner reviews, not tested in person

Quick answer

The fitted sheet depth your mattress needs once the topper and protector are counted.

The fitted sheet depth your mattress needs once the topper and protector are counted. The formula is shown under the calculator, and every figure it uses is labelled as either an industry standard or a convention, so you can see which parts are settled and which are guidance.

Calculator Industry standard figures

Result

Standard pocket

12 in stack

Mattress
12 in
Topper
0 in
Protector
0 in
Total depth
12 in

A standard pocket sheet is rated to 12 inches.

The formula

Pocket depth needed = mattress thickness + topper thickness + protector thickness. Standard pockets fit up to 12 in, deep 13 to 17 in, extra deep 18 to 22 in.

Products for this answer

These re-order as you change the numbers above. Prices change often.

Frequently asked questions

How does the sheet pocket depth calculator work?

Pocket depth needed = mattress thickness + topper thickness + protector thickness. Standard pockets fit up to 12 in, deep 13 to 17 in, extra deep 18 to 22 in. The calculation runs in your browser as you type, and the working is shown line by line beside the result so you can check it against your own measurements rather than taking the number on trust.

Are these figures an industry standard or a convention?

These are published industry standards. US mattress dimensions, fitted sheet pocket classes and box spring profiles are consistent across manufacturers, so the figures here are the same wherever you shop. That makes them safe to measure and order against, though you should still confirm the exact dimensions a specific product publishes before buying.

What happens if I enter numbers outside the usual range?

It stops and says so rather than guessing. When the inputs fall outside what the published data supports, the result reads "Not enough to answer" instead of showing a confident figure. A disclaimer does not make a wrong number right, so returning nothing is the honest outcome when the underlying data does not cover your case.

Does this calculator store the numbers I enter?

No. Everything is computed in your browser and nothing you type is transmitted or saved. There is no account, no login and no record of your measurements. You can block cookies entirely and every calculator on this site will still work exactly the same way.

How to read the numbers on this page. Standard mattress and bedding dimensions are industry-wide and the same across manufacturers. Guidance like replacement intervals, firmness by body weight and walking clearance is convention rather than a measured standard, and every table here says which it is. Where a manufacturer does not publish a figure we leave it out instead of estimating. This is not medical advice: a mattress is not a treatment for a medical condition, and persistent pain is a reason to see a clinician.