How to Choose the Right Bed Sheets for Your Mattress?
Most shoppers focus on color, pattern, and fabric—but if you pick the wrong sheet size for your mattress, your purchase becomes pointless and wastes time. This Sheet Size Guide gives you foolproof advice to nail the fit every time.
Bed Sheet Sizes Chart
| Features | Fitted sheet size | Flat sheet size |
| Twin | 39"x75"x15" | 66" x 96" |
| Twin XL | 39"x 80"x15" | 66" x 96" |
| Full | 54" x 75"x15" | 90" x 102" |
| Full XL | 54" x 80"x15" | 84" x 100" |
| Queen | 60" x 80"x15" | 90" x 102" |
| King | 78" x 80"x15" | 105" x 102" |
| California King | 72" x 84"x15" | 108" x 102" |
| Split King | 39" x 80"x15" | / |
Twin Size Sheet Dimensions
Fitted sheet size – 39 inches wide and 75 inches long with a 15-24 inches deep pocket
Flat sheet size – 66 inches wide and 96 inches long
A twin-size bed is the smallest standard bed size designed for one person to sleep comfortably. Typically, a twin mattress measures 38×75 inches, so you’ll want sheets that are slightly larger than those dimensions.
Twin XL Sheet Dimensions
Fitted sheet size – 39 inches wide and 80 inches long with a 15-24 inches deep pocket
Flat sheet size – 66 inches wide and 96 inches long
A Twin XL mattress is slightly larger than Twin and is common in college dorms. If you're in university, you’ll want sheets or fitted sheets (bed skirts) that fit this size. Flat sheets typically measure;66 x 102 inches, while fitted sheets are usually 39 x 80 inches
Full / Double Sheet Dimensions
Fitted sheet size – 54 inches wide and 75 inches long with a 15-24 inches deep pocket
Flat sheet size – 90 inches wide and 102 inches long
A full-size bed (also called a double bed) is a popular choice for apartment dwellers because it’s spacious enough for comfort without taking over the entire room. A full-size fitted sheet measures 54 inches wide by 75 inches long, while a flat sheet typically comes in 90 inches wide by 102 inches long. You can also opt for slightly larger sheets—they’ll still work just fine.
Full XL Sheet Dimensions
Fitted sheet size – 54 inches wide and 80 inches with a 15-24 inches deep pocket
Flat sheet size – It’s usually a bit larger than a full-size bed, but not by much—just keep that in mind when shopping.
Queen Sheet Dimensions
Fitted sheet size – 60 inches wide and 80 inches long with a 15-24 inches deep pocket
Flat sheet size – 90 inches wide and 102 inches long
Couples or individuals who prefer more sleeping space often opt for oversized fitted sheets. These typically measure 60 inches in width and 80 inches in length. To pair with them, flat sheets are usually sized at 90 inches wide and 102 inches long for proper coverage.
King Sheet Dimensions
Fitted sheet – 78 inches wide and 80 inches long with a 15-24 inches deep pocket
Flat sheet – 105 inches wide and 102 inches long
A king-size mattress is perfect for families who want to sleep together comfortably. The fitted sheet for this size usually measures 78 inches in width and 80 inches in length, while the flat sheet (top sheet) is typically sized at 105 inches wide and 102 inches long for full coverage.
California King Sheet Dimensions
Fitted sheet – 72 inches wide and 84 inches long with a 15-24 inches deep pocket
Flat sheet – 108 inches wide and 102 inches long
A California King bed is the largest standard mattress size and is very common in homes. The fitted sheet for this size typically measures 72 inches in width and 84 inches in length, while the flat sheet (top sheet) is usually sized at 105 inches wide and 102 inches long for full coverage.
When shopping for fitted sheets, you might notice pocket depths ranging from 15 to 24 inches—this is completely normal. As long as the length and width match your mattress, you're good to go. The pocket depth (sometimes called 'height') matters for thicker mattresses: if your mattress is taller, you'll need a fitted sheet with a deeper pocket to ensure a snug fit.
