US mattress sizes: a basis for comparing bedding
The video surveys US mattress size names and dimensions. Before ordering bedding, compare the item's own length and width in centimetres too; a name such as Queen is not a complete specification.
By Sleepopolis · Video language: English
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Dimensions of mattresses and fitted sheets in the USA
Nominal mattress dimensions are shown as width × length. Choose a fitted sheet intended for the actual mattress dimensions and height. Some manufacturers list Twin as 39 inches wide and Full as 53 inches wide.
| Size | inches | cm approx |
|---|---|---|
| Twin | 38 × 75 | 96.5 × 190.5 |
| Twin XL | 38 × 80 | 96.5 × 203.2 |
| Full / Double | 54 × 75 | 137.2 × 190.5 |
| Queen | 60 × 80 | 152.4 × 203.2 |
| King | 76 × 80 | 193 × 203.2 |
| California King | 72 × 84 | 182.9 × 213.4 |
| Split King | 2 × 38 × 80 | 2 × 96.5 × 203.2 |
American duvet covers measurements - example from a brand
An example from the Brooklinen table reviewed in September 2026, and not a standard for the entire US. The filling blanket should match the duvet cover you chose; Check the latest product specifications.
| The size of the duvet cover | Inches: width x length | cm approx |
|---|---|---|
| Twin / Twin XL | 64 × 90 | 162.6 × 228.6 |
| Full / Queen | 90 × 90 | 228.6 × 228.6 |
| King / Cal King | 106 × 90 | 269.2 × 228.6 |
Dimensions of an American flat sheet - an example from a brand
Here, too, the numbers are examples from the Brooklinen table, and not a uniform measure. The size is larger than the mattress to allow for falling and tucking.
| The measure of the set | Inches: width x length | cm approx |
|---|---|---|
| Twin | 71 × 98 | 180.3 × 248.9 |
| Twin XL | 71 × 104 | 180.3 × 264.2 |
| Full | 86 × 98 | 218.4 × 248.9 |
| Queen | 92 × 104 | 233.7 × 264.2 |
| King / Cal King | 110 × 104 | 279.4 × 264.2 |
American pillow sizes and pillowcase adjustment
The table refers to the pillows themselves, not necessarily to the dimensions of the fabric of the pillowcase. Pillowcase may include extra length for opening and closing.
| pillow size | inches | cm approx |
|---|---|---|
| Standard | 20 × 26 | 50.8 × 66 |
| Queen | 20 × 30 | 50.8 × 76.2 |
| King | 20 × 36 | 50.8 × 91.4 |
American pillowcases dimensions — example
In the Brooklinen table, a regular pillowcase is shared by Twin to Queen sets; Check fit for a long Queen pillow. These are the product pillowcase dimensions and not the pillow dimensions.
| The type of pillowcase in the example | inches | cm approx |
|---|---|---|
| normal pillowcase | 20 × 27 | 50.8 × 68.6 |
| pillow case King | 20 × 37 | 50.8 × 94 |
How do you measure bedding? Three simple drawings
The drawings demonstrate the measurement directions and are not to scale. Measure the item itself, not the bed frame.
Frequently asked questions about bedding sizes
Is Full the same as Queen?
No. Nominal Full is 54 x 75 inches and Queen is 60 x 80. Duvet cover may be sold as Full/Queen, but fitted sheet requires matching to the mattress.
How many centimeters are in one inch?
One inch is exactly equal to 2.54 cm. Convert each side separately.
Is California King wider than King?
No. It is 4 inches narrower and 4 inches longer than a nominal King.
Does the bedding material change the size chart?
The size name does not change according to the fiber. In cotton, linen, microfiber or jersey, flexibility, pocket depth and care instructions must be checked separately.
Mattress sizes: Saatva and Casper. Sample item measurements: Brooklinen. Cushion measurements: Saatva guide. Data reviewed in September 2026; There may be differences between models. for checking the information on the website.
American measurements: first identify the item
In the US, size names are used for both mattresses and bedding, but not every item called Queen has the same dimensions. A fitted sheet fits around the mattress, a flat sheet is larger, and a duvet cover must match the duvet insert.
In the following tables, the mattress dimensions are accepted dimensions according to which the mattresses are sold. Flat sheet and duvet cover sizes are shown as examples of a particular brand, because they vary between manufacturers. The conversion is based on one inch which is exactly equal to 2.54 cm, and is rounded to the tenth of a cm.
King and California King: what's the difference?
A standard King measures 76 × 80 inches. California King measures 72 × 84 inches, making it narrower and longer. It is not larger in both directions, and the fitted sheets are not interchangeable.
Sometimes duvet covers and flat sheets are sold in a joint size King / Cal King. This does not mean that the sheet with the elastic fits both; Read the breakdown of each part.
For more information on the subject: Bedding size guide: Israeli bedding size charts by bed type.
Twin, Twin XL and Split King
Twin and Twin XL differ in length. According to the dimensions of the mattresses in the table, the difference is 5 inches, that is 12.7 cm. When purchasing for a dorm room or an adjustable bed, check especially the length and not just the width of the sheet.
Split King consists of two Twin XL mattresses. Usually choose two suitable fitted sheets, one for each mattress. Separately, you can choose a shared blanket or two blankets. The structure of the mattress does not require one of the options.
How do you check suitability for a bed in Israel?
Convert the measurements and compare to the actual width, length and height. An American Queen with a width of 152.4 cm is not an Israeli mattress with a width of 160 cm. An American King with a width of approximately 193 cm is not equal to 180 or 200 cm.
Check pocket depth: 16 inches is approximately 40.6 cm, but the manufacturer’s stated fit determines compatibility. Do not assume elastic or a knitted fabric can compensate for a size difference outside the specified fit range.
Sources and scope
Source check: September 15, 2026. The information was checked against the sources listed here. The selection tips help you compare options; they are not based on hands-on product tests by MyViro.
By MyViro.
The content explains textile characteristics and is not the result of a product test in a laboratory. How we prepare our guides
Illustrative photos on this page were created with AI.
