King Bed Sheets

King bed sheets cut to the full 76 × 80 in. king mattress — with a 17 in. deep pocket, full-perimeter elastic and generously-sized 110 × 108 in. flat sheet. Our king bed sheets are quality-tested in 100% extra-long-staple cotton, 400 thread count percale, single-ply, built to stay put on a wide mattress two people move around on independently. Why king bed sheets sold as “king” often aren’t A king mattress measures 76 inches wide by 80 inches long, and that width is where most sheet sets quietly fail. A set cut for a queen and relabelled leaves you with a flat sheet that will not tuck on both sides and a fitted sheet whose corners let go somewhere around 3am. Our king bed sheets are cut to the full king footprint, with the fitted sheet built to a 17 in. pocket so it clears a pillow-top or a mattress topper without stretching thin across the surface. Specifications Cut: Standard king (76 × 80 in.) Fiber: 100% extra-long-staple cotton Weave: Percale, 400 thread count, single-ply Fitted sheet: 78 × 80 in. with 17 in. pocket Flat sheet: 110 × 108 in. — generous tuck on both sides Pillowcases: Two king cases, 20 × 40 in. Elastic: Full-perimeter The one detail that decides a king fitted sheet Elastic runs the entire perimeter of the fitted sheet rather than sitting in the corners alone — the single detail that decides whether a king fitted sheet stays put on a wide mattress that two sleepers move around on independently. Corner-only elastic fails as one corner lets go, then a second; perimeter elastic holds tension across the whole sheet and keeps it seated for years. King bed sheets size guide PieceDimensions Mattress fit76 × 80 in. standard king Fitted sheet78 × 80 in. with 17 in. pocket Flat sheet110 × 108 in. Pillowcases (×2)20 × 40 in. king If you make the bed without a top sheet, the flat sheet doubles as a light summer cover on its own. How to care for your king bed sheets Machine wash warm, tumble dry low, remove promptly Safe at 60 °C where a hot wash is needed, though 40 °C preserves the finish considerably longer Skip fabric softener — it coats the fibers and slowly costs the fabric its breathability, which matters more on a large surface area that traps warmth between two sleepers Iron warm if desired; percale takes a press well Rotate two king sets in weekly rotation for longest life King vs California King vs Alaskan King Sizes get confused constantly and are not interchangeable. Standard king is 76 × 80 in. A California king is four inches longer and four narrower (72 × 84 in.) — cut differently and listed separately. An Alaskan king is 108 × 108 in. — a completely different size. And an adjustable base needs two separate fitted sheets rather than one — see our split king sheet set. Frequently asked questions What are the dimensions of king bed sheets? Our king fitted sheet is 78 × 80 in. with a 17 in. pocket to fit the standard 76 × 80 in. king mattress. Flat sheet 110 × 108 in.; king pillowcases 20 × 40 in. Will king bed sheets fit a California king? No — Cal king is four inches longer (84 in.) and four narrower (72 in.). A standard king fitted sheet will bag at the sides and come up short at the foot. Buy Cal king specifically. Do king bed sheets fit split king adjustable beds? No — a split king adjustable base needs two twin XL fitted sheets, one per side of the mattress. Buy the split king set instead. How deep should king bed sheet pockets be? 17 in. clears standard king mattresses and most pillow-tops. For very deep beds (over 17 in. mattress plus topper) choose the extra-deep option. Complete the king bed Layer with a matching king duvet cover, coordinated king pillowcases and a king bed skirt. For related weaves and materials in king, browse the full bed sheets collection.