Mattress Sizes and Bed Dimensions Chart (US, UK, EU, Australia)
Width and length of every standard mattress, the space each sleeper actually gets, how US sizes line up with UK, European and Australian beds, and which size fits which room.
A queen mattress is 60 × 80 in (152 × 203 cm), a king is 76 × 80 in (193 × 203 cm), a California king is 72 × 84 in (183 × 213 cm), a full is 54 × 75 in (137 × 191 cm) and a twin is 38 × 75 in (97 × 191 cm). Twin XL is a twin stretched to 80 in (203 cm) long.
- Queen
- 60 × 80 in
- King
- 76 × 80 in
- California king
- 72 × 84 in
- Twin / Twin XL
- 38 × 75 / 38 × 80 in
On this page
- US mattress sizes chart
- How much room each sleeper gets
- Twin vs twin XL, full vs queen, king vs California king
- Mattress sizes in the UK, Europe and Australia
- Which mattress size fits your room
- Getting a mattress into the room
- Thickness, bedding and other sizes that depend on the mattress
- Frequently asked questions
US mattress sizes chart
US mattress sizes are an industry convention rather than a written federal standard, but every major brand builds to the same nominal numbers. Expect the actual product to be up to 1 in (2.5 cm) smaller in either direction, because foam and fabric compress and manufacturing tolerances run in that range.
| Size | Inches | Centimeters | Surface area | Typical use |
|---|---|---|---|---|
| Crib | 28 × 52 | 71 × 132 | 10.1 sq ft | Cribs and toddler beds |
| Twin (single) | 38 × 75 | 97 × 191 | 19.8 sq ft | Children, bunk beds, daybeds |
| Twin XL | 38 × 80 | 97 × 203 | 21.1 sq ft | College dorms, tall single sleepers |
| Full (double) | 54 × 75 | 137 × 191 | 28.1 sq ft | One adult, guest rooms |
| Queen | 60 × 80 | 152 × 203 | 33.3 sq ft | Couples, the best-selling size |
| King | 76 × 80 | 193 × 203 | 42.2 sq ft | Couples who want 38 in each |
| California king | 72 × 84 | 183 × 213 | 42.0 sq ft | Tall sleepers, narrow rooms |
The California king is narrower but longer than the king, so it is not a "bigger king". It has slightly less total area. The extra 4 in of length is the reason to buy one: it suits people over about 6 ft 2 in.
Less common US sizes
| Size | Inches | Centimeters | Notes |
|---|---|---|---|
| Small double (three-quarter) | 48 × 75 | 122 × 191 | Older and antique frames; sheets are hard to find |
| Full XL | 54 × 80 | 137 × 203 | Full width with queen length |
| RV short queen | 60 × 74 | 152 × 188 | Fits the shorter bed platforms in campers |
| Olympic queen | 66 × 80 | 168 × 203 | Discontinued by most brands; 6 in wider than a queen |
| Split king | 2 × (38 × 80) | 2 × (97 × 203) | Two twin XLs, used on split adjustable bases |
| Wyoming king | 84 × 84 | 213 × 213 | Custom order |
| Texas king | 80 × 98 | 203 × 249 | Custom order |
| Alaskan king | 108 × 108 | 274 × 274 | Custom order; 9 × 9 ft |
The three oversized "kings" have no industry definition, so two makers can sell different dimensions under the same name. Confirm the exact measurements before you order a frame or bedding for one.
How much room each sleeper gets
Width per person decides comfort far more than total area. A twin mattress is 38 in wide, and that is the usual benchmark for one adult. Divide the mattress width by two to see what a couple really shares:
| Size | Width per person | Compared with a twin |
|---|---|---|
| Full | 27 in (69 cm) | 11 in narrower than a twin |
| Queen | 30 in (76 cm) | 8 in narrower than a twin |
| California king | 36 in (91 cm) | 2 in narrower than a twin |
| King | 38 in (97 cm) | The same as a twin |
A full works for one adult or for a couple who sleep close. A couple sharing with a child or a large dog is effectively three sleepers, and only a king or Cal king leaves each of them about 25 in.
For length, choose a mattress at least 6 in longer than the tallest sleeper so feet do not hang off when the pillow takes up the top of the bed. That puts the cut-offs at about 5 ft 9 in for 75-in beds (twin, full), 6 ft 2 in for 80-in beds (twin XL, queen, king) and 6 ft 6 in for the 84-in California king.
Twin vs twin XL, full vs queen, king vs California king
These are the three comparisons that decide most purchases. The numbers are fixed, so the choice comes down to the room and the sleepers.
| Pair | Width difference | Length difference | What it means |
|---|---|---|---|
| Twin vs twin XL | Same (38 in) | XL is 5 in longer | Twin sheets will not fit an XL; XL suits teens and adults |
| Full vs queen | Queen is 6 in wider | Queen is 5 in longer | Queen fits adults over 5 ft 9 in; needs about 6 in more wall |
| Queen vs king | King is 16 in wider | Same (80 in) | King adds 8 in per sleeper; needs a room at least 12 ft wide to be comfortable |
| King vs Cal king | Cal king is 4 in narrower | Cal king is 4 in longer | Pick Cal king for height or a long, narrow room |
A twin XL is the standard in US college dormitories, which is why dorm bedding is sold separately. A king and a Cal king look interchangeable in a store, but sheets, frames and box springs are not: a king fitted sheet is 4 in too wide and 4 in too short for a Cal king.
Mattress sizes in the UK, Europe and Australia
Outside North America beds are specified in centimeters, and the same name often means a different size. A UK king is close to a US queen, and a European "double" can be 140, 160 or 180 cm wide.
| Region and name | Centimeters | Inches | Closest US size |
|---|---|---|---|
| UK single | 90 × 190 | 35.4 × 74.8 | Twin (2.6 in narrower) |
| UK small double | 120 × 190 | 47.2 × 74.8 | Small double |
| UK double | 135 × 190 | 53.1 × 74.8 | Full |
| UK king | 150 × 200 | 59.1 × 78.7 | Queen |
| UK super king | 180 × 200 | 70.9 × 78.7 | Cal king width, king length |
| EU single | 90 × 200 | 35.4 × 78.7 | Twin XL (narrower) |
| EU double | 140 × 200 | 55.1 × 78.7 | Full XL |
| EU queen / 160 | 160 × 200 | 63.0 × 78.7 | Queen (3 in wider) |
| EU king / 180 | 180 × 200 | 70.9 × 78.7 | Between queen and king |
| EU super king / 200 | 200 × 200 | 78.7 × 78.7 | King (2.7 in wider) |
| Australia single | 92 × 187 | 36.2 × 73.6 | Twin |
| Australia king single | 107 × 203 | 42.1 × 79.9 | No US match |
| Australia double | 138 × 187 | 54.3 × 73.6 | Full |
| Australia queen | 153 × 203 | 60.2 × 79.9 | Queen |
| Australia king | 183 × 203 | 72.0 × 79.9 | Cal king width, king length |
Most European frames, including IKEA's European range, take 200 cm (78.7 in) mattresses, which are 1.3 in shorter than a US 80-in mattress. A US mattress on a European frame usually overhangs the end slightly; the reverse leaves a small gap. Sheets transfer better than mattresses, since fitted-sheet elastic absorbs a 2 to 3 cm difference.
Which mattress size fits your room
Leave at least 24 in (61 cm) of walking space on each open side of the bed and at its foot; 30 to 36 in feels comfortable. A simple frame adds about 2 in of width and 3 to 4 in of length to the mattress, and a bulky upholstered or sleigh frame can add far more (see bed frame dimensions).
| Mattress | Minimum room | Comfortable room |
|---|---|---|
| Twin | 7.5 × 9 ft (2.3 × 2.7 m) | 9 × 10 ft (2.7 × 3.0 m) |
| Full | 9 × 9 ft (2.7 × 2.7 m) | 10 × 10 ft (3.0 × 3.0 m) |
| Queen | 9.5 × 9 ft (2.9 × 2.7 m) | 10 × 12 ft (3.0 × 3.7 m) |
| King | 10.5 × 9 ft (3.2 × 2.7 m) | 12 × 12 ft (3.7 × 3.7 m) |
| California king | 10.5 × 9.5 ft (3.2 × 2.9 m) | 12 × 12 ft (3.7 × 3.7 m) |
The minimum column fits the bed with 24-in walkways and nothing else. The comfortable column also allows two nightstands and a dresser with room to open its drawers. A twin pushed into a corner needs much less space, about 5.5 × 8.5 ft, which is why it suits children's rooms. Nightstand, dresser and wardrobe sizes are in the bedroom furniture dimensions guide.
Tape the mattress outline on the floor, then add the frame allowance. Open the room door, the closet door and the top dresser drawer. If any of them hit the tape or leave less than 24 in to walk, size down or rearrange.
Getting a mattress into the room
Width and length are not the only measurements that matter on delivery day. Most US interior doors are 30 to 32 in wide and 80 in tall, and stair landings are often tighter than the doors.
- Boxed (bed-in-a-box) mattresses ship rolled in a carton roughly 16 to 20 in square and 40 to 45 in long, which passes through any door. Most need 24 to 72 hours to reach full size after unboxing.
- Innerspring and hybrid queens and kings travel flat. Carried on its long edge, a 12-in queen is 60 in tall and 12 in thick, so it passes a 30-in doorway easily. The trouble spot is a stair landing, where the 80-in length has to swing around; the mattress flexes a little, but only so far.
- Box springs do not bend. A queen box spring is a rigid 60 × 80 in panel, and a king foundation almost always comes as two 38 × 80 in halves. For tight stairs, order a split queen foundation (two 30 × 80 in pieces).
Thickness, bedding and other sizes that depend on the mattress
Width and length set the size of almost everything else on the bed, while thickness decides whether that bedding still fits.
- Depth: most mattresses are 10 to 14 in thick, and pillow tops and luxury hybrids reach 16 in or more. The mattress depth guide covers thickness by type and how it changes total bed height.
- Sheets: a fitted sheet matches the mattress width and length plus a pocket for its depth. See bed sheet sizes.
- Comforters and duvets run about 30 in wider than the mattress to cover the sides; the comforter size chart lists each bed.
- Toppers are cut to the same width and length as the mattress; check the mattress topper sizes before you buy one for an older or European bed.
- Pillows: two queen pillows (30 in each) span a queen exactly, and two king pillows (36 in) span a Cal king. Details are in the pillow size guide.
For guest and camping beds, inflatable mattresses copy these names but not always the exact numbers; see air mattress sizes. Children moving out of a crib usually go to a toddler bed, which takes the same 28 × 52 in mattress, or straight to a twin.
Frequently asked questions
Is a king bed the same as two twin beds?
No. Two twins (38 × 75 in each) make 76 × 75 in, which is 5 in shorter than a king. Two twin XL mattresses (38 × 80 in each) make exactly 76 × 80 in, the size of a king. That pairing is sold as a split king.
Is a double bed the same as a full?
Yes. In the US, full and double are two names for the same 54 × 75 in (137 × 191 cm) mattress. A UK double is 135 × 190 cm, so it is about the same, and a European double is usually 140 × 200 cm, which is longer.
What size is a queen mattress in cm and meters?
A US queen is 152 × 203 cm, or 1.52 × 2.03 m (60 × 80 in). The closest European size is 160 × 200 cm, which is 8 cm wider and 3 cm shorter, and the UK king at 150 × 200 cm is almost the same as a US queen.
How much bigger is a king than a queen?
A king is 16 in (41 cm) wider than a queen and the same 80 in length. That gives it 6,080 sq in of surface against 4,800 sq in, or 27% more area. Each of two sleepers gets 38 in of width on a king and 30 in on a queen.
What is the biggest mattress size?
Among standard sizes, the king has the most area (76 × 80 in, 42.2 sq ft), just ahead of the California king (72 × 84 in, 42.0 sq ft). Custom sizes such as the Texas king (80 × 98 in), Wyoming king (84 × 84 in) and Alaskan king (108 × 108 in) are larger but are made to order and need custom frames and bedding.
What size is a crib mattress?
A full-size crib mattress is about 28 × 52 in (71 × 132 cm). US federal rules require it to be at least 27 1/4 × 51 5/8 in and no more than 6 in thick, so it fits snugly in a standard crib. Toddler beds use the same mattress. See the crib size guide.