by Use the chart for sizing, then start with a real bedding partner if you are ready to buy. Our top pick is PlushBeds Sheets & Linens, with two backup options in the table below.
Editor's pick, bed sheets
Sleep Lab Pick · Current Sale
For the full breakdown, see our 60-night Saatva Classic review.
Current Sale, Amerisleep's current sale runs sitewide. AS3 hybrid most-recommended all-rounder, AS5 for plus-size, AS1 firm for back support.
Saatva Percale Sheet Set
From $145 · 100% long-staple organic cotton · 200 thread count percale weave · 45-night trial
Finding the right sheet size means matching both the mattress surface dimensions and the pocket depth to your mattress height. This reference chart covers every standard US size from twin through California king.
TL;DR
Bed sheet selection comes down to weave (percale = crisp, sateen = silky), fiber (cotton, linen, bamboo, Tencel), thread count (200-400 ideal for percale), and fit (deep-pocket matters for pillow-tops).
Jump to section
For thread count guidance, see our companion guide on sheet thread count.
Complete Sheet Size Reference Chart
| Size | Mattress | Fitted Sheet | Flat Sheet | Pillowcase |
|---|---|---|---|---|
| Twin | 38 x 75 in | 39 x 75 in + 14 in pkt | 66 x 96 in | 20 x 30 in (std) |
| Twin XL | 38 x 80 in | 39 x 80 in + 14 in pkt | 66 x 102 in | 20 x 30 in (std) |
| Full / Double | 54 x 75 in | 54 x 75 in + 14 in pkt | 81 x 96 in | 20 x 30 in (std) |
| Queen | 60 x 80 in | 60 x 80 in + 15 in pkt | 90 x 102 in | 20 x 30 in (std) |
| King | 76 x 80 in | 78 x 80 in + 15 in pkt | 108 x 102 in | 20 x 40 in (king) |
| California King | 72 x 84 in | 72 x 84 in + 15 in pkt | 108 x 102 in | 20 x 40 in (king) |
Our Top Pick
Saatva Percale Sheets
Available in all sizes from twin to California king. 15-inch deep pockets. GOTS-certified cotton.
Pocket Depth Chart: What Your Mattress Height Requires
| Mattress Height | Pocket Depth Needed | Category Label |
|---|---|---|
| 8-10 in | 12-14 in | Standard pocket |
| 11-13 in | 14-16 in | Deep pocket |
| 14-16 in | 16-18 in | Deep pocket |
| 17-21 in (with topper) | 19-21 in | Extra deep pocket |
Flat Sheet Dimensions and Why They Matter
Flat sheets are measured in their unfolded, laid-flat state. The dimensions assume 10 to 15 inches of overhang on each side of the mattress for tucking. If you prefer a hotel-style tight tuck on all four sides, the standard flat sheet provides adequate overhang for queen and king beds. If you do not tuck, oversized flat sheets create visual bulk you may or may not want.
Pillowcase Sizes by Pillow Type
Frequently asked questions about this size
Frequently asked questions about sheets
Our top sheet pick
Saatva Organic Percale Sheet Set, from $145
300-thread-count GOTS-certified organic long-staple cotton with a crisp percale weave. Hotel-grade feel, 45-night trial, deep pockets fit up to 15" mattresses.
What's the best cotton sheet fiber?
Long-staple cotton (Egyptian, Pima, Supima) wins on softness and durability. Regular cotton pills faster and feels rougher. All good sheet brands list the cotton type on the tag. Saatva uses 100% organic long-staple cotton.
How often should you wash sheets?
Every 7-10 days. More frequent if you sleep hot, share the bed with pets, or have eczema. Less frequent = acne breakouts, dust mite buildup, off-smell.
How long do quality sheets last?
Percale: 5-10 years. Sateen: 4-7 years. Linen: 15-30 years. Microfiber: 2-4 years. Sheet longevity is mostly about fiber choice and wash temperature (cool wash extends lifespan 30-50%).
Our default pick at this size
Saatva Classic, from $999
The Saatva Classic is the most-ordered luxury hybrid on the US market and ships in every standard size. Zoned lumbar support, 365-night home trial, lifetime warranty, free white-glove delivery + old-mattress removal included.
What are the standard mattress size dimensions?
Twin: 38"×75" | Twin XL: 38"×80" | Full: 54"×75" | Queen: 60"×80" | King: 76"×80" | Cal King: 72"×84". Oversized specialty sizes (Alaskan, Wyoming, Texas) run from 80"×98" up to 108"×108".
How do I choose the right mattress size?
Three-factor rule: (1) tallest sleeper + 6" = minimum length needed, (2) 30"/person minimum width (more if you bed-share with kids/pets), (3) bedroom layout needs 2' walking clearance minimum on one side. Size up when any of these is borderline.
Does Saatva make every mattress size?
Yes, the Saatva Classic comes in Twin, Twin XL, Full, Queen, King, Cal King, and Split King. All sizes ship with free white-glove delivery.
| Pillow Size | Pillow Dimensions | Pillowcase Size |
|---|---|---|
| Standard | 20 x 26 in | 20 x 30 in |
| Queen | 20 x 30 in | 20 x 30-32 in |
| King | 20 x 36 in | 20 x 40-41 in |
| Body pillow | 20 x 54 in | 21 x 60 in |
For individual size deep-dives, see: twin sheet size guide, queen sheet size guide, and king sheet size guide.
Frequently Asked Questions
What are all the standard sheet sizes?
The six standard US sheet sizes are: twin (38x75 in), twin XL (38x80 in), full/double (54x75 in), queen (60x80 in), standard king (76x80 in), and California king (72x84 in). Each requires fitted sheets with matching pocket depth for the mattress thickness.
What is the difference between queen and king sheet sizes?
A queen mattress is 60x80 inches; a standard king is 76x80 inches. The king is 16 inches wider but the same length. King sheets are not interchangeable with queen sheets. The fitted sheet dimensions differ by 16 inches in width.
What pocket depth do I need for a thick mattress?
Measure your actual mattress height and add 2 to 3 inches for grip margin. A 12-inch mattress needs at least 14 to 15-inch pocket depth. A 15-inch pillow-top needs 17 to 18 inches. A 14-inch mattress with a 3-inch topper (effectively 17 inches) needs 19 to 21-inch extra-deep pockets.
Are full and queen sheets the same size?
No. A full (double) mattress is 54 inches wide; a queen is 60 inches wide. Full sheets on a queen bed will not grip corners properly on the fitted sheet, and the flat sheet will be 6 inches too narrow per side. Never substitute full sheets for queen.
What sheet size does a split king need?
A split king is two twin XL mattresses side by side. You need two twin XL fitted sheets (39x80 inches each). A standard king fitted sheet does not work because split king mattresses can move independently and each half needs its own securely fitted sheet.
Disclosure: MattressNut earns a commission on qualifying Saatva purchases at no extra cost to you.
Related Sleep Lab Guides
PlushBeds Sheets & Linens
If this guide answered the sizing or setup question, this is the matching partner path to check next.