Bed Sheet Sizes Chart: Every Dimension in Inches & cm (2026)

Sheets don't fit like clothes fit — "king" isn't one thing. A US King sheet (76" × 80") won't fit an Alaskan King mattress (108" × 108"). A "deep pocket" fitted sheet fits a 15" mattress but bunches up on an 8" one. And if your mattress has a topper, every size chart on the internet is lying to you by 2–6 inches.

This guide is the honest bed sheet size reference — every standard dimension in inches and centimeters, plus the pocket-depth rule, fitted vs flat sheet logic, pillowcase sizing, oversized beds (Alaskan, Texas, Wyoming), split kings, and how to measure if you're unsure.

Got the size figured out? The other half of the buying decision is fabric, weave, and thread count. See our how to choose bed sheets buying guide for the full breakdown.

Bed sheet sizes chart (inches + cm)

These are the US standard fitted sheet and flat sheet dimensions. Mattress size is listed first because fitted sheets are cut to the mattress, not to the sheet name.

Fitted sheet dimensions add 1–2 inches to the mattress width and length so the sheet can wrap around the corners. Flat sheet dimensions add drop on all four sides — typically 15" overhang on standard sizes, more on king+.

Stonewashed linen queen sheet set — 60×80″ fitted with 16″ pocket, plus 90×102″ flat sheet for full 15″ side drop.

Crib, toddler, and kids' bed sizes

Children's bed sizes aren't in the main chart above because safety standards govern them separately. Here's what you need to know:

Critical safety rule for cribs: fitted sheets must be specifically labeled "crib size" (and ideally non-toxic — infants are the most chemically-sensitive population for bedding) — never improvise with twin sheets cut to fit. Loose crib sheets are a known suffocation hazard flagged by the CPSC (Consumer Product Safety Commission). The sheet should pull taut on all four corners with no slack on the mattress surface.

Mattress depth and pocket size — the part nobody explains

This is where most sheet-fit problems actually start. A fitted sheet's "pocket" is the depth it can wrap around your mattress. If the pocket is smaller than your mattress depth, the corners pop off. If it's much larger, the sheet is loose and bunches.

The three pocket-depth tiers

• Standard pocket: 7–11 inches. Fits thin, older, or base-only mattresses. Rare on modern beds.
• Deep pocket: 12–15 inches. The modern default. Fits most pillowtop mattresses, plush foam, and hybrid builds without a topper.
• Extra-deep / ultra-deep pocket: 16–22 inches. Required if you use a mattress topper, a thick pillowtop, or any aftermarket stacking.

How to measure your mattress depth

1. Strip the mattress to bare fabric (no topper, no protector).
2. Measure from the bottom seam to the top seam on the side of the mattress, not through the top.
3. Add the topper thickness if you use one. A 3" topper on a 12" mattress = 15" total depth, needing a 16"+ pocket for clean tuck.
4. Add 1 inch of clearance — sheets shrink slightly on first wash, and pockets that just-barely fit will pop off a month in.

If you're buying linen, cotton percale, or lyocell sheets, the pocket depth is usually listed in the product specs. Skipping it is the single most common reason people say "these sheets don't fit" — usually the mattress is deeper than the pocket.

Fitted sheets: sizing, elastic, and why corners pop

Fitted sheets are cut to the mattress footprint, then sewn with an elastic band that pulls the sheet under the mattress. Three things matter:

1. Pocket depth (covered above) — has to clear your mattress plus topper.
2. Elastic type — all-around elastic grips better than four-corner elastic. Cheap sheets have corner-only elastic, which is why they pop off on one corner first.
3. Fabric shrinkage — quality cotton and linen (especially GOTS-certified organic fibers) shrink 3–7% on first wash, which tightens the fit. Cheaper polyester-blend sheets don't shrink, but they also don't soften.

If your fitted sheet pops off corners: the pocket is too shallow, the elastic is four-corner only, or the mattress has more depth than the sheet was designed for (usually from adding a topper). None of that is a "bad sheet" issue — it's a mismatch.

How to measure a fitted sheet (the elastic-corner method)

If you're replacing a fitted sheet that fit perfectly, measure the old sheet — not the mattress. Manufacturers round dimensions differently, so "queen" from one brand can be 2" different from another.

1. Lay the fitted sheet flat with corners gathered naturally (don't pull them out — keep the elastic relaxed).
2. Measure the length from one elastic corner to the diagonal elastic corner — this is roughly the mattress length it was designed for.
3. Measure the width the same way — corner to corner along the short edge.
4. Pull one corner flat and measure from the elastic seam to the top surface — that's the pocket depth.
5. Stretch the elastic fully and note the stretched length — if it barely extends, the elastic is fatigued and the sheet is at end-of-life regardless of fabric condition.

This matters because pocket depth on the tag is often measured before washing. After 20+ washes, natural-fiber sheets have shrunk 3–7% and the pocket is 0.5–1" shallower than the label says. Measuring the actual sheet tells you what you've got, not what it was labeled as.

Buying blind online? Look for sheets that publish both "fits mattresses up to X inches deep" and the actual sewn-in pocket depth. Those two numbers should differ by at most 1". If the listing only says "deep pocket" with no inches, skip it — the pocket could be anything.

Flat sheet dimensions and how much overhang you need

Flat sheets are simpler: they're a rectangle. The dimension is mattress size + drop. A "drop" is how far the sheet hangs over the side of the bed before you tuck it under.

How much drop is right?

• Twin / Full: 15" drop on each side is standard. Enough to tuck under the mattress.
• Queen: 15" drop on the sides, 22" at the foot (accounting for the longer mattress).
• King / Cal King: 16" drop on sides, 22" at foot. This is why king flat sheets are 108" wide — 76" mattress + 16" × 2 sides.
• Oversized (Wyoming, Texas, Alaskan): flat sheets are proportionally larger — 108–132" wide — because standard drops look stingy on a 7–9 foot bed.

If you don't use a top sheet (the "European way"), you can skip the flat sheet entirely — a duvet with washable cover does the same job. Most sheet sets sell fitted + flat + pillowcases because US households still use top sheets; a flat-sheet-free setup is usually sold as a "duvet cover set."

Pillowcase sizes (and why "king" pillowcases don't fit king pillows)

Pillowcases are sized by the pillow, not the bed. And the names are confusing.

The sizing trap: "king pillowcase" with a king bed

A king bed comes with king pillowcases (20 × 36). If you only own standard pillows (20 × 26), you have 10 inches of empty pillowcase — it looks sloppy. Fix: either buy king pillows to match, or buy queen pillowcases and just use them on a king bed (visually closer to the pillow size).

Euro pillowcases (26 × 26 square) are decorative. They go behind your sleeping pillows, not under your head — the pillow-insert isn't shaped for neck support.

Euro pillow placement: how many fit on each bed

Euro pillows (26 × 26") are decorative — they sit behind sleeping pillows and against the headboard. The number that fits depends on bed width:

• Twin / Twin XL: 1 Euro pillow (center) or 2 small Euros (20 × 20") side by side
• Full / Queen: 2 Euro pillows side by side (perfect fit at 26 × 2 = 52", which tucks inside 60" queen)
• King / Cal King: 3 Euro pillows side by side (26 × 3 = 78" — fits 76" King perfectly, 72" Cal King with slight overlap)
• Oversized Kings: 3 Euros for Wyoming King (84" — room to breathe); 4 smaller Euros work for Alaskan King visually

Euro pillows always sit behind your sleeping pillows, never under them — the pillow insert is shaped for back support (when sitting up reading), not neck support for sleeping. If you want Euros without the clutter of managing decorative-vs-sleeping pillows, put them on a daybed or guest bed where the visual pays off without getting in the way nightly.

Duvet cover sizes (they don't match mattress size)

Duvet covers are sized by the duvet insert, not the mattress. A Queen bed doesn't automatically take a "Queen duvet cover" — it depends on how much drop you want on each side.

Why duvet covers are wider than the mattress: the cover needs to hang over the sides to look right and to tuck in comfortably. A duvet that matches the exact mattress width will look stingy. Aim for 8–15" of overhang per side.

If you skip flat sheets (European style): the duvet cover takes on more importance — you'll want a size that gives at least 12" drop per side, since the cover is the only thing between you and the duvet insert. Go one size larger than your mattress for the right look.

Insert matters too: a king duvet cover with a queen insert floats loose inside and bunches. Match the insert size to the cover — not the cover to the bed.

Cream organic percale Full/Queen duvet cover (88×92″) — gives ~14″ drop per side on a queen mattress.

Oversized beds: Alaskan, Texas, Wyoming, Olympic Queen

These are real sizes, but standard retailers rarely stock sheets for them. If you're shopping for any of these, buy the sheets with the bed or from a specialist — you won't find Alaskan King sheets at most mainstream bedding stores.

• Olympic Queen (66 × 80): 6" wider than a Queen. Rare in new-home builds. Sheet options are limited — most people use queen sheets with slightly loose tuck.
• Wyoming King (84 × 84): Square. Good for co-sleeping families. Needs 84 × 84 fitted sheets and 108 × 108 flat sheets.
• Texas King (80 × 98): Longer than standard — 18" longer than Queen. Built for tall sleepers (6'5"+). Fitted sheets run 80 × 98 with 15"+ pockets.
• Alaskan King (108 × 108): The largest standard-named size. A full 108" × 108" square. Fitted sheets are 108 × 108, flat sheets 132 × 132. These are specialty purchases.

For a full comparison of oversized king sizes — Alaskan vs Texas vs Wyoming vs California — see our guide to oversized king beds.

Split kings, adjustable bases, and why they need different sheets

A Split King is two Twin XL mattresses side by side on an adjustable base — each side moves independently. You cannot use a regular King fitted sheet on a Split King, because the mattresses separate and pivot.

What you actually need for a split king

• Two Twin XL fitted sheets (one per side) — so each mattress can articulate independently.
• One King flat sheet (108" × 102") — covers both sides as one.
• Two King pillowcases — standard king bed pillow configuration.

Split California King uses two 36 × 84 fitted sheets and a Cal King flat sheet. Some retailers sell "split king sheet sets" that bundle all of this — simpler than buying twin XL pieces separately.

How to choose the right sheet size (decision logic)

Three questions, in order:

1. What does the mattress measure? Measure it yourself — don't trust the bed frame label. Mattresses vary slightly by brand.
2. How deep is it, including any topper? This decides pocket depth. Under 12": standard or deep. 12–15": deep pocket. 16+": extra-deep.
3. Is it a split or adjustable base? If yes, you need two fitted sheets (one per mattress half), not one.

For fabric choice once size is settled, see our linen vs cotton sheet comparison or the cooling sheets guide if you sleep hot.

Why European and UK sizes are different

US sheet sizes don't match European or UK sizes, even when the names sound the same. Quick conversion:

• UK "Double" = 135 × 190 cm ≈ US "Full" (54 × 75"), but NOT identical — UK Double is wider by 1" and shorter by 0.5".
• UK "King" = 150 × 200 cm — narrower than US King (76"), same length as US Queen.
• UK "Super King" = 180 × 200 cm — close to US King width, shorter than US King by 1".
• EU "King" = 160 × 200 cm — varies by country; IKEA "King" is 180 × 200.

If you're buying US sheets for a European mattress (or vice versa), check actual inches/cm rather than trusting the name. Linen sheets especially tend to shrink into a snugger fit, which helps with slightly oversized mismatches — cotton percale is less forgiving.

Common fit problems and what they actually mean

• Corners pop off after a week: pocket too shallow (usually from adding a topper). Size up to extra-deep.
• Fitted sheet bunches in the middle: pocket too deep for the mattress. The sheet has slack it can't tension. Buy a shallower pocket.
• Flat sheet is too short at the foot: the drop isn't accounting for your mattress depth. Look for flat sheets sized for deep mattresses, or size up to the next bed size flat.
• Pillowcase slides off the pillow: pillowcase is sized larger than the pillow (common: king pillowcase on standard pillow). Match pillowcase to pillow, not to the bed.
• "Queen sheets don't fit my queen bed": 9 times out of 10, it's mattress depth + topper stacking past the sheet's pocket. Measure the mattress side seam-to-seam with the topper ON.

Bed sheet size FAQ

What size sheets do I need for a crib or toddler bed?

Crib and toddler beds use the same mattress size (28 × 52 inches). Use a fitted sheet specifically labeled "crib size" — never a cut-down twin or improvised sheet. Crib sheets must fit snugly with no slack (CPSC safety standard) because loose sheets are a suffocation hazard.

What size duvet cover do I need for a queen bed?

For a queen bed, use a Full/Queen duvet cover (88 × 92 inches / 224 × 234 cm). That gives roughly 14-inch drop on each side of the mattress. If you want more overhang, size up to King (104 × 92 inches). Match the duvet cover to the duvet insert — not to the mattress.

How do I measure my fitted sheet to buy a replacement?

Lay the sheet flat with corners relaxed. Measure corner-to-corner diagonally for length and width. Measure from the elastic seam to the top surface for pocket depth. Use those dimensions to find a match — measuring the old sheet is more reliable than measuring the mattress, because "queen" rounds differently across brands.

How many Euro pillows fit on a queen bed?

Two Euro pillows (26 × 26 inches each) fit perfectly on a queen bed — 52 inches total, inside the 60-inch queen width. For king beds, three Euro pillows fit side by side.

Can I use twin sheets on a trundle or daybed?

Yes. Trundles, daybeds, bunk beds, and loft beds all use standard twin mattresses (38 × 75 inches) and take regular twin sheets. Check specifically if it's Twin XL (80 inches long) — common in college dorms — because regular twin sheets will be too short.

What size is a queen sheet?

A queen fitted sheet is 60 × 80 inches (152 × 203 cm) to match a queen mattress. The flat sheet is 90 × 102 inches (229 × 259 cm), sized for 15" side drop and 22" foot drop.

What size is a twin sheet?

A twin fitted sheet is 39 × 75 inches (99 × 191 cm) for a standard twin. A Twin XL fitted sheet is 39 × 80 inches (99 × 203 cm) — the same width but 5 inches longer, typical in college dorms and split-king configurations.

What size is a king sheet?

A US King fitted sheet is 78 × 80 inches (198 × 203 cm) to fit a 76 × 80 King mattress. The flat sheet is 108 × 102 inches. California King is different: 72 × 84 inches fitted.

Are king and California king sheets interchangeable?

No. King is 76 × 80, California King is 72 × 84 — King is wider, Cal King is longer. A King fitted sheet is too short for Cal King; a Cal King fitted sheet is too narrow for King. Always match to the specific mattress.

What does "deep pocket" mean on a fitted sheet?

Deep pocket means the fitted sheet wraps 12–15 inches of mattress depth. Extra-deep is 16–22 inches, required if you use a mattress topper or have a thick pillowtop.

How do I measure my mattress for sheets?

Strip the bed to bare mattress (remove toppers and protectors). Measure the width and length across the top surface. Then measure the side from bottom seam to top seam to get depth. Add the topper thickness if you use one — that's your required pocket depth.

Why does my fitted sheet pop off the corners?

Usually the mattress is deeper than the sheet's pocket — most common after adding a topper that pushes total depth past 15". Size up to extra-deep pocket (16"+) and check that the sheet has all-around elastic, not corner-only.

Are twin and twin XL sheets the same?

No. Twin is 38 × 75 inches, Twin XL is 38 × 80 inches — same width, 5 inches longer. Twin XL sheets won't fit a standard twin (too long); twin sheets won't fit a Twin XL (too short at the foot).

What are pillowcase sizes?

Standard pillowcase is 20 × 26 inches (for queen and smaller beds). Queen pillowcase is 20 × 30, King is 20 × 36. Euro is 26 × 26 square (decorative only). Body pillowcase is 20 × 54.

How much do sheets shrink on the first wash?

Quality cotton and linen shrink 3–7% on the first hot wash. Pre-shrunk and stonewashed fabrics shrink less (1–3%). Polyester blends don't shrink meaningfully. Always size up pocket depth by 1 inch if you plan to hot-wash.

What's the difference between US King and UK King?

US King is 76 × 80 inches (193 × 203 cm). UK King is 150 × 200 cm (roughly 59 × 79 inches) — narrower than US King by 17 inches. UK Super King (180 × 200 cm) is closer to US King width but slightly shorter.

Do I need a flat sheet?

No. Flat sheets are a US and UK convention — most of continental Europe skips the flat sheet and uses only a duvet with a washable cover. If you prefer that setup, buy a duvet cover set instead of a full sheet set.

The bottom line

Getting sheet size right is 80% measuring your mattress correctly (including the topper) and 20% matching the named size. Pocket depth matters more than the fabric brand — a great sheet with the wrong pocket depth fits worse than an average sheet with the right one. If you're buying oversized — Alaskan, Texas, Wyoming — order sheets from a specialist at the same time as the bed; they're almost never in stock anywhere else.

Once size is sorted, fabric is the next decision. For heat, durability, and feel, see our linen vs cotton comparison. For hot sleepers, the cooling sheets guide. For wash frequency, how often to wash bed sheets.

— Or & Zon —

Ready for the complete bed?

Or & Zon's complete bed sets — GOTS-certified organic cotton or stonewashed linen, every size from Twin to California King. Sheets, duvet cover, pillowcases bundled.

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