Bed Sheet Sizes Chart & Dimensions Guide
Find the perfect fit.
Shopping for bed sheets is easy when you know what size to look for. Most are designed to fit with specific mattress sizes, including twin, full, queen, king, and California king, but you may also need to consider the mattress depth (for fitted sheets) and how far you want flat sheets to overhang from the bed. Read on to find out how you can determine which bed sheet size you need.
Key Takeaways:
- Twin fitted sheets measure 75" L x 40" W and twin flat sheets are 95" L x 65" – 70" W.
- Queen fitted sheets measure 80" L x 60" W and queen flat sheets measure 100" – 110" L x 90" – 100" W.
- King fitted sheets measure 80" L x 80" W and king flat sheets measure 105" – 115" L x 100" – 110" W.
- Flat sheets are 20" – 30" wider and longer than fitted sheets for proper tucking.
- Fitted sheet pocket depth should be 1" – 3" longer than the mattress depth.
In this guide:
Bed Sheet Size Chart
Fitted Sheet Sizes & Pocket Depth
Flat Sheet Sizes & Overhang
Pillowcase Sizes
Frequently Asked Questions
Bed Sheet Size Chart: Flat & Fitted Sheet Dimensions
This chart outlines the standard sheet sizes that are compatible with each mattress size. Fitted bed sheets are designed to match the mattress size for a snug fit, while flat sheets are designed to be slightly longer and wider than the compatible mattress for proper coverage and comfort.
Twin & Twin XL Sheet Sizes
Twin-size fitted sheets measure 75" L x 40" W, while flat sheets are 95" L x 65" – 70" W. Slightly longer than twin-size sheets, twin XL fitted sheets are 80" L x 40" W and flat sheets are 100" L x 65" – 70" W.
Full/Double & Full XL Sheet Sizes
Full or double fitted sheets are 75" L x 55" W, and the accompanying flat sheets measure 95" – 105" L x 80" W. Full XL beds provide extra length, which makes fitted sheets 80" L x 55" W and flat sheets 100" – 110" W x 80" W.
Queen Sheet Sizes
Queen-size fitted sheets measure 80" L x 60" W and flat sheets measure 100" – 110" L x 90" – 100" W.
King & California King Sheet Sizes
King fitted sheets are typically 80" L x 80" W and flat sheets range from 105" – 115" L x 100" – 110" W. To accommodate a larger bed size, California king fitted sheets are 85" L x 70" W and flat sheets are 100" – 110" L x 110" – 120" W.
Split King Sheet Sizes
A split king bed is essentially two twin XL mattresses on a king-size bed frame. Sheets for these beds consist of two twin XL fitted sheets measuring 80" L x 40" W and one king flat sheet measuring between 105" – 115" L x 100" – 110" W.
Pocket size and depth are important considerations when buying fitted sheets to ensure your sheets will stay in place around the mattress. Keep in mind that pocket size varies between linen manufacturers, and you should always check both your mattress’s dimensions and the sheets’ pocket size before you purchase.
Pocket depth can be a little tricky, because the term describes the length of the sheet’s corner seam instead of the mattress depth it will fit. Pocket depth should be 1" – 3" longer than the mattress depth. To determine if your mattress will fit, subtract 2" from the pocket depth of the fitted sheet. If the remaining size is larger than or the same as your mattress depth, the sheets will fit well.
If the fitted bed sheets’ product description provides information about "mattress height" or "mattress depth" instead of pocket depth, then those sheets will fit a mattress of the given height – no subtraction needed.
Tip!
If you're choosing bed sheets for a mattress with a depth of 8" or less (like a kid’s mattress or a sofa bed mattress), you may need low-profile pocket depth sheets instead.
How Much Overhang Should a Flat Sheet Have?
Consider how much you want your flat sheets to hang off your mattress for comfort and visual appeal. You can determine how wide and long you would like your sheets to be with a few simple equations. These equations can be used to find a sheet that will perfectly hang over the bottom end of your mattress and the two sides. If you would like to tuck your sheets on three sides, add a few inches to the mattress depth in the equations above.
Tip!
Not everyone prefers to sleep with a flat sheet. Read our guide What Is a Top Sheet? (& Do You Actually Need One?) to learn more about the pros and cons of skipping this piece of bedding.
Pillowcase Sizes by Bed Size
Pillowcase sizes can range depending on manufacturer, but they're usually designed to fit a particular bed pillow size. Typically, standard-size pillows measure 26" L x 20" W, queen pillowcases measure 30" L x 20" W, and king-size pillows measure 40" L x 20" W. Learn more in our guide Choose the Perfect Pillowcase Size for Your Pillows.
Tip!
If you’d like to learn more about bedding components and how to choose the right ones for your bed, read our related guides:
- What Are the Most Common Bed Sizes?
- Blanket & Quilt Sizes for All Your Needs
- Basic Parts of Bedding You Need to Know
- Bed Sheet Thread Count: What You Should Know
Frequently Asked Questions
What’s the difference between flat vs. fitted sheets?
Fitted sheets are designed with elastic corners to fit snugly around your mattress, while flat sheets lay under your comforter or quilt and hang over the sides of the mattress for more coverage.
How do I choose the correct pocket depth for my fitted sheet?
Fitted-sheet pocket depth refers to the length of the sheet’s corner seam, not the depth of your mattress. To ensure a good fit, your fitted sheet’s pocket depth should be 1" – 3" longer than your actual mattress depth.
What is a deep-pocket fitted sheet?
Deep-pocket fitted sheets have longer corner seams designed to fit thick mattresses that are between 15" – 18" thick.
Will twin sheets fit on a twin XL mattress?
No. Twin XL mattresses are 5" longer than regular twins and require longer sheets. Choose fitted sheets that are 80" L x 40" W and flat sheets that are 100" L x 65" – 70" W for a proper fit on a twin XL bed.
What size are full/double sheets?
Full fitted sheets measure 75" L x 55" W and full flat sheets measure 95" – 105" L x 80" W.
What size are queen sheets?
Queen fitted sheets measure 80" L x 60" W and queen flat sheets measure 100" – 110" L x 90" – 100" W.
What size are king sheets?
King fitted sheets measure 80" L x 80" W and king flat sheets measure 105" – 115" L x 100" – 110" W.
What size sheets fit on a split king bed?
Split king beds usually require two twin XL fitted sheets and one king-size flat sheet to allow for proper coverage and individual mattress movement.
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Last updated: July 24, 2026
