Bed Sheet Size Chart: Twin to Cal-King, Inches and CM
Yutong WuThe short answer: the full bed sheet size chart
A bed sheet has no single size. The fitted sheet copies the mattress. The flat sheet is cut bigger on purpose. And the pocket is its own decision entirely. Here is the whole ladder, crib to California king, in inches and centimeters.
| Bed size | Mattress, width × length (in / cm) | Fitted sheet (in / cm) | Flat sheet, typical range (in / cm) | Pocket note |
| Crib | 28 × 52 (71 × 132) | 28 × 52-54 (71 × 132-137) | n/a | n/a |
| Twin | 38 × 75 (97 × 191) | 39 × 75 (99 × 191) | 66-72 × 96-110 (168-183 × 244-279) | Match pocket to mattress height (decoder below) |
| Twin XL | 38 × 80 (97 × 203) | 39 × 80 (99 × 203) | 66-72 × 96-114 (168-183 × 244-290) | Match pocket to mattress height (decoder below) |
| Full | 54 × 75 (137 × 191) | 54 × 75 (137 × 191) | 92-96 × 102-112 (234-244 × 259-284) | Match pocket to mattress height (decoder below) |
| Queen | 60 × 80 (152 × 203) | 60 × 80 (152 × 203) | 92-96 × 102-114 (234-244 × 259-290) | Match pocket to mattress height (decoder below) |
| King | 76 × 80 (193 × 203) | 76 × 80 (193 × 203) | 102-114 × 112-114 (259-290 × 284-290) | Match pocket to mattress height (decoder below) |
| Cal king | 72 × 84 (183 × 213) | 72 × 84 (183 × 213) | 102-111 × 112-114 (259-282 × 284-290) | Match pocket to mattress height (decoder below) |
Fitted dimensions are commerce conventions: the numbers three size guides converged on, one independent and two from mattress makers (View Sources). One prints king fitted at 73 × 80 and Cal king at 73 × 85, and its twin row runs an inch long, so inch-level variance is real. Flat sheets print as ranges because makers cut them differently by design.
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Key Takeaways
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Two sentences carry the whole chart. A fitted sheet’s numbers are the bed’s numbers, because its job is to grip. A flat sheet’s numbers are the bed’s numbers plus deliberate surplus, because its job is to drape and tuck, which is why the flat column prints ranges while the fitted column barely moves. And “roughly” rides every figure: sheet sizes are conventions copied from the same beds, not measurements governed by a standard.
Fitted vs. flat: why the two numbers differ
A fitted sheet is a mattress-shaped pocket with elastic sewn into its corners. Its job is grip, so its width and length are the mattress’s own width and length. Its third measurement, the pocket, runs down the sides to hold everything on. In the chart above, the pattern is visible row by row: the fitted column and the mattress column are nearly the same numbers, because every maker is cutting for the same beds.
A flat sheet has no corners and no grip. It is a rectangle laid over the bed, and its size answers a different question: is there enough cloth to hang down the sides and still reach underneath? One guide describes the mechanism plainly as “tucking the bottom and sides underneath the mattress.” The surplus is the design, not sloppiness. A flat sheet cut to the mattress’s exact dimensions would lie on top and slide.
That is also the decode for “sheet set.” The conventional set is one fitted sheet, one flat sheet, and pillowcases. The 4-piece and 6-piece framing you see on listings is commerce packaging language, not a standard, and set contents vary by seller. What kind of pillowcase a set actually includes is its own question, and the sham guide answers it.
Derived, not measured: the queen tuck allowance
Both starting points come from the chart’s own rows: the queen fitted sheet at 60 × 80, where three guides agree, and the queen flat range at 92-96 wide by 102-114 long, which is what three guides print. Width surplus: 92 − 60 = 32 up to 96 − 60 = 36, halved for a mattress centered on the sheet, so 16 to 18 inches per side. Length surplus: 102 − 80 = 22 up to 114 − 80 = 34, so 11 to 17 inches per end. This is our calculation from those two rows, not a measurement, and it assumes a centered mattress, no shrinkage, and no drape over a bed frame. Move either starting row and the answer moves with it.
The same arithmetic on the king row gives 13 to 19 inches per side and 16 to 17 per end. Recompute any row yourself: flat minus fitted, halved.
The drawing shows the floor of the range, 92 by 102. The longest cuts add about 2 inches per side and 6 per end by the same subtraction. Either way the surplus is working material for tucking, not waste. The pocket question is still unopened, and it is where the mis-buys live: next section.
Pocket depth, decoded: the label nobody standardized
Pocket depth is the fitted sheet’s height measurement: how tall a mattress the corner can pull over. Get it right and the sheet stays where you put it. Undershoot it and the elastic works free and pops off the corner. Overshoot it and the extra depth tucks under the mattress, which is mostly harmless.
Here is what the labels do not tell you: nobody standardizes them. Across the guides in our register, standard pockets top out somewhere between 12 and 14 inches, deep runs 13 to 18, extra deep 16 to 25, and the boundaries move from guide to guide.
Where each boundary actually sits depends on who is printing it:
- One mattress maker draws standard at 7 to 12 inches while selling its own sheets to a 16-inch pocket.
- Another calls 10 to 12 standard and everything taller deep.
- The independent guide’s standard and deep rows overlap outright, and its warning is practical: standard sets might not fit mattresses taller than 14 inches.
The shopping layer is looser than the guide layer. One retailer’s category page promises pockets up to 16 inches that fit mattresses 18 to 24 inches tall, a pairing no printed elastic convention can honor. Another retailer’s average set is rated to fit up to 15 inches, which sits at another brand’s deep-pocket floor. When the sellers disagree by this much, the label has stopped carrying information.
Your defense is a number, and it is yours: the height of the stack.
Derived, not measured: the topper arithmetic
Starting point one is yours to supply: measure the mattress height at the corner with the topper and any mattress protector still on, and call it H. Starting point two is mechanical: the pocket must reach at least H to stay on. Starting point three is one maker’s documented convention, not law: buy 1 to 2 inches deeper than your measured height for easy seating. So the minimum pocket is H, and the comfortable pocket is H plus 1 to 2 inches. Our calculation, and it moves with your tape measure. No source in our set documents an elastic-stretch allowance, so none is assumed here.
Which yields the operating rule for the whole aisle: the printed depth number beats the label, every time. “Fits mattresses up to 16 inches” is a checkable claim; “deep pocket” is a mood. Measure the stack first, then read numbers, not adjectives, off the packaging.
How much deeper than the mattress should the pocket run? The one documented maker convention, from the arithmetic above, is 1 to 2 inches of ease for seating. Our fitting-floor rule asks for more: 2 to 4 inches, 5 to 10 centimeters, of tuck-under, because fabric pulled under the mattress is what holds the corner on.
That margin also explains the shelf’s most common single depth: 16 inches. Cutting one pocket per line keeps a seller’s SKU count down, and 16 inches is the rational single choice, because it clears mattresses up to about 14 inches, 35 centimeters, already a thick bed. Thinner mattresses still fit, since the elastic gathers the excess. The failure mode is age: once that elastic relaxes, a deep pocket on a thin mattress sits loose and baggy, never quite taut.
On silk, that bagginess is more than cosmetic. Loose excess fabric folds over itself in the same spots night after night, silk takes and holds those creases, and folding along one line, repeated, is wear. Match the pocket to the mattress height and most of that folding never happens. The same rule turns any printed depth into a mattress band:
| Pocket depth | Best-fit mattress height | Typical bed |
| 12 in (30 cm) | Up to 8-10 in (20-25 cm) | Standard-height mattresses, most base models |
| 14 in (35 cm) | 10-12 in (25-30 cm) | Thicker mattresses, entry pillow-tops |
| 16 in (40 cm) | 12-14 in (30-35 cm) | Deep pillow-tops, thick foam and hybrid builds |
Those bands are why our own line does not take the one-depth shortcut. We cut our 22-momme silk fitted sheets in all three depths, so the pocket can match the mattress instead of forcing every bed into the deepest one. The 16-inch depth still catches thinner mattresses, elastic and all, with the bagginess risk stated above. The sixty-second version of getting your number is next.
What size sheets fit your bed: the mapping
The chart answers what size it is. The mapping answers which one is yours. Beds are a ladder of trades between width, length, and floorspace, and the sheet follows the bed: pick the rung first. Fitted dimensions are restated in inches. Centimeters live in the chart above.
| Bed size | Fitted sheet | Who it works for | Watch-outs |
| Twin | 39 × 75 | Kids, bunks, daybeds, the small guest single | Shortest standard length; taller sleepers need twin XL |
| Twin XL | 39 × 80 | Taller teens and adults, dorm rooms, adjustable bases | Needs its own fitted; twin flats vary by maker, so check the length before sharing |
| Full | 54 × 75 | One adult who wants width; tight for two | The couples’ default is one rung up |
| Queen | 60 × 80 | Two sleepers; the default couples’ bed | Pocket depth still decides the buy, not the label |
| King | 76 × 80 | The family bed, pets included, sleepers who want zero contact | Same 80 in length as queen: width is the entire upgrade |
| Cal king | 72 × 84 | Taller sleepers, rooms with length to spare | 4 in longer and 4 in narrower than king; the sheets do not interchange |
Twin and twin XL: the five-inch difference
Twin is the workhorse rung: kids’ rooms, bunk beds, daybeds, and the small guest single. Twin XL adds five inches of length, making it the dorm mattress and a common adjustable-base pick. It is the right bed for taller teens and adults. The trap is the fitted sheet: a twin fitted is five inches too short for a twin XL mattress, so the XL bed needs its own.
On the flat sheet the makers disagree. One shares the twin’s cut, another cuts the XL longer, so check the length before sharing.
Full: width for one, tight for two
Full is the width upgrade for a single sleeper: more shoulder room than a twin in nearly the same floorspace. For two people it is tight, and the couples’ default sits one rung up. On length, one maker’s question-and-answer page rates a full as fitting a sleeper up to 5 ft 10 in. Taller couples already have their answer.
Queen: the default for two
Queen is the default bed for two sleepers and the size most sheet questions are really about. Over a full it adds six inches of width, the difference between sharing comfortably and negotiating elbows, and it fits comfortably in rooms where a king would dominate.
King and Cal king: the width-length swap
King is the widest standard bed: the family bed, pets included, two sleepers who want no contact at all. Notice what it does not add. A king is exactly as long as a queen, 80 inches. Width is the entire upgrade.
California king swaps the shape: 72 by 84, four inches narrower than a king and four inches longer, built for taller sleepers and rooms with length to spare. That swap is why king and Cal king sheets are not interchangeable, and why the chart keeps them on separate rows.
Three rungs sit outside the ladder, chart-note tier:
- A split king is two twin XL mattresses side by side, and one maker’s note says you may get away with two twin XL fitted sheets and one king flat, minding the pocket depth. That is a single source, disclosed.
- Olympic queen, 66 × 80, and Alaskan king, 108 × 108, exist per one mattress maker’s size page, single source.
- Crib, 28 × 52, anchors the other end of the ladder.
One more mapping, the bridge to the other half of the bed: a queen bed typically dresses two standard-or-queen pillows. The pillow size chart lives in our pillowcase size guide, and sizing those two pillows is the same measuring habit, one layer up.
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How to measure in 60 seconds: length, width, height
Three numbers, about sixty seconds, and the third is the one everyone skips:
- Strip the bed. Duvet, blankets, pillows, all of it off: you are measuring the mattress, not the bedding.
- Length and width come next, taken at the top surface, edge to edge. Those two numbers alone pick your row in the chart.
- Height, measured at the corner, with the topper and the mattress protector still on. Their thickness counts. The pocket has to cover the stack, not the bare mattress, and this is the number the whole pocket decoder turns on.
If you fall between sizes, resist the instinct to round up the way you might for pillows. Sheets reward exact matches: a fitted sheet one size large wrinkles and its corners work loose, and one size small will not seat at all. There is no size-up-for-loft move in this aisle.
For the sheets you already own, the same tape measure settles whether the set in the closet fits the new bed. Measure a fitted sheet’s width straight across, edge to edge, and its depth from the elastic corner up to the seam. Go gently: the elastic stretches, and pulled fabric inflates both numbers.
One border caution, convention-tier: size names do not translate. A queen elsewhere is not necessarily your queen. Measure, and do not trust the name.
What varies besides size
Size is one decision, and it is the only one this page makes. The other decisions have homes of their own:
- Fiber is preference and budget, not a dimension, and the fabric decision is argued in its own guide.
- Thread count qualifies a fabric rather than sizing a bed, and the thread-count yard lives in the thread-count guide.
- Weave names like percale and sateen describe how cloth is constructed, and what percale actually means is a piece of its own.
Where to buy gets the same treatment: decision axes instead of a store roll-call. Budget microfiber, everyday cotton, and premium organic or linen are shopping contexts, not quality verdicts, and no retailer list stays useful for long. We name no stores and print no prices, because both go stale. Put pocket depth ahead of price in your sequence: an inexpensive sheet that pops off the corner every night is not inexpensive.
Which leaves the disclosure, plain: we sell silk fitted sheets ourselves, so the temptation would be to push one row. The chart still has no favorite, because your tape measure, not our catalog, picks the row. Ranges and named variance are the honest form of a size chart.
The sheets are the mattress layer of the bed you just measured. The pillow layer is the other half, the two standard-or-queen pillows a queen bed dresses. For that half, which pillow fabric to put on the bed you just measured is the live comparison, and Ohmysilk’s 22-momme mulberry silk pillowcases are ours, in standard/queen and king sizes, OEKO-TEX Standard 100 certified.
Frequently Asked Questions
What is the size of a queen bed sheet?
It splits by piece. The queen fitted sheet is 60 by 80 inches, 152 by 203 centimeters, the mattress’s own numbers. The queen flat sheet runs roughly 92 to 96 inches wide by 102 to 114 long, by maker. And pocket depth is its own question, decoded in the section above.
What are the best sheets for a queen size bed?
Size and fabric are two decisions, and this page settles only the first. What fiber is best is preference and budget, not a dimension, and the fabric decision is argued in the fabric guide. Get the row right here, then go argue taste there.
What is the best thread count for queen size sheets?
Thread count qualifies a fabric, not a size. There is no queen number of threads; the thread-count yard lives in its own guide, and the queen half of the question is already answered by the chart above.
Where can I find affordable queen bed sheets?
Decision axes, not a store list. Every major bedding retailer stocks queen; the real shortlist is budget microfiber versus everyday cotton versus premium organic or linen, with pocket depth checked before price. We name no retailers and print no prices, because both go stale and every price source is a seller.
Will queen sheets fit a full bed?
Loosely, and not for long. A queen fitted is 6 inches wider and 5 inches longer than a full mattress, 60 versus 54 and 80 versus 75, so it will tuck, sloppily, and the corners are pop-prone. The right buy for a full bed is a full fitted.
What does deep pocket actually mean?
There is no standard behind it. Guides place the standard-to-deep boundary anywhere from 12 to 16 inches, and retailer category pages disagree further. The printed depth number is the only real answer, and the decoder above shows how to get yours. Our fitting rule for using it: buy the pocket that sits 2 to 4 inches deeper than the measured stack.
Conclusion
The whole size question in three sentences. The fitted sheet copies the bed, so its numbers sit still. The flat sheet adds deliberate surplus, 16 to 18 inches of it per side on a queen, because tucking is its job. And the pocket needs your tape measure, taken at the corner with everything on it. The bed is now measured; the pillow layer is the other half of the decision.
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View Sources
- Sleep Foundation, “Bed Sheet Sizes” bedding guide (independent sleep editorial). The convergence backbone for the chart’s fitted rows and the independent voice of the three-guide register. Supplies: full dual-unit dimension table including bed skirt and crib rows (crib 28 × 52); king fitted printed as 73 × 80 and Cal king as 73 × 85 (the variance outliers disclosed in the chart footnote); twin fitted 39 × 76 (the inch-level twin variance); pocket regimes standard 7-14 / deep 7-15 / extra-deep 16-24, whose overlapping rows are themselves cited in body as the variance exhibit; the warning that standard sets might not fit mattresses taller than 14 inches; the measuring convention (blankets off, topper included, tape the profile); set contents (fitted + flat + pillowcases); and the flat-sheet tuck mechanism quoted in body: “tucking the bottom and sides underneath the mattress.” curl 200 + content-extracted 2026-09-30 per the brief’s register; publish-day human spot-check pending (Cloudflare browser gate to curl; the 2026-09-30 register pull stands).
- Saatva, “Bed Sheet Sizes: Guide to Bed Sheet Dimensions | Saatva” (mattress maker guide, disclosed). Maker-guide tier, commerce convention. Supplies: the twin XL row (mattress 38 × 80 / fitted 39 × 80 / flat 72 × 114); pocket regimes 7-12 / 13-17 / 18-25; the one documented ease convention, 1 to 2 inches deeper than mattress height; the note that this maker’s own sheets fit to 16 inches; the split-king note (may get away with two twin XL fitted sheets), cited in body as single-source; per-size who-serves prose behind the mapping table’s guidance language. curl 200 + content-extracted 2026-09-30 per the register; exact page title confirmed at the 2026-09-30 factcheck and now carried in the anchor.
- Purple, “Bed Sheet Sizes and Dimensions Guide + Chart [2026]” (mattress maker guide, disclosed). Maker-guide tier. Supplies: the second fitted ladder (39 × 75 / 39 × 80 / 54 × 75 / 60 × 80 / 76 × 80 / 72 × 84); the flat ladder feeding the chart’s flat ranges (66 × 96 up to 102 × 112); the crib row 28 × 52; twin and twin XL sharing one flat cut at this maker (the flat-sharing variance named in body); standard mattress framed as 10-12 inches before deep pocket; and the fitted-sheet self-measure method in the 60-second protocol (width edge to edge, depth from elastic corner to seam). curl 200 + content-extracted 2026-09-30 per the register; exact page title confirmed at the 2026-09-30 factcheck and now carried in the anchor.
- Purple, “Bed Sizes and Mattress Dimensions: Guide + Comparison Chart” (mattress maker, disclosed). Supplies: the mattress nominal ladder cross-check behind the chart’s mattress column; the Olympic queen 66 × 80 and Alaskan king 108 × 108 one-liners, cited in body as single-source; and the question-and-answer entry calling a full a fit for a 5 ft 10 in sleeper. curl 200 + content-extracted 2026-09-30 per the register; exact page title confirmed at the 2026-09-30 factcheck and now carried in the anchor.
- Pocket-regime retailer exhibits (unnamed in body): category-page snippets observed on the 2026-09-29 SERP snapshot, one promising pockets up to 16 inches fitting 18 to 24 inch mattresses, another rating its average set to fit up to 15 inches. SERP observation, below Tier 3: verification targets and framing exhibits, never sources. Homed in the seat’s SERP dossier (.raw/serp/).
- Derived arithmetic (tuck allowance, king echo, topper arithmetic, and the 6-and-5 inch queen-versus-full comparison in FAQ): our calculations from the chart’s own registered rows, labeled “derived, not measured” at every appearance, premises visible, fragility stated in-sentence. No measurement is claimed anywhere in them.
- Pillow bridge fact (“a queen bed typically dresses two standard-or-queen pillows”): rides the pillowcase-size-chart article’s receipt family per the pair ruling, linked-not-argued; it is not re-argued or re-sourced here.
- Fitting-floor experience (the 2 to 4 inch tuck-under rule, the depth-to-mattress bands, and the three-depth practice): first-hand product experience of the author, head of product, recorded 2026-10-29. Labeled in body as our rule of thumb, never as a standards spec.