997
Bed size chart
Standard US bed sizes, in inches and centimetres — Twin, Twin XL, Full, Queen, King and California King — with the area, the width per sleeper and the minimum room size. Put in a width and the calculator finds the nearest size.
★ EVERYDAY · BED SIZE CHART · DIMENSIONS
Bed Size Chart: Twin, Full, Queen, King Dimensions 2026
A Queen is 60 x 80 inches — 152.40 x 203.20 cm, 33.33 square feet, 30.00 inches per sleeper. Put in the width and the sleepers, and the calculator finds the nearest standard US bed size, with the centimetres, the area, the width per sleeper and the minimum room size.
The bed size chart
The six standard US bed sizes, in inches and centimetres, with the area, the width per sleeper and the minimum room size. Twin beds are made for one sleeper — the full 38 in is yours; the 19.00 in figure is the arithmetic half.
| Bed | Width (in) | Length (in) | Width (cm) | Length (cm) | Area (sq ft) | Width per sleeper, 2 people (in) | Minimum room (ft) |
|---|---|---|---|---|---|---|---|
| Twin | 38 | 75 | 96.52 cm | 190.50 cm | 19.79 | 19.00 | 8.17 x 9.25 |
| Twin XL | 38 | 80 | 96.52 cm | 203.20 cm | 21.11 | 19.00 | 8.17 x 9.67 |
| Full | 54 | 75 | 137.16 cm | 190.50 cm | 28.13 | 27.00 | 9.50 x 9.25 |
| Queen | 60 | 80 | 152.40 cm | 203.20 cm | 33.33 | 30.00 | 10.00 x 9.67 |
| King | 76 | 80 | 193.04 cm | 203.20 cm | 42.22 | 38.00 | 11.33 x 9.67 |
| California King | 72 | 84 | 182.88 cm | 213.36 cm | 42.00 | 36.00 | 11.00 x 10.00 |
How to use the chart
On the defaults — a 60 in wide bed with 2 sleepers — the nearest standard size is the Queen: 60 x 80 in, 152.40 x 203.20 cm, area 33.33 sq ft, 30.00 in per sleeper (76.20 cm), minimum room 10.00 x 9.67 ft. The calculator finds the nearest size by width, and ties round up to the larger size: 74 in is exactly between the California King (72 in) and the King (76 in), so it rounds up to the King. The minimum room is a planning guide — 30 in of walking room on each side, 24 in at the foot — not a building code. A California King is narrower but longer than a King (72 in wide, 84 in long) — built for tall sleepers, not wide ones.
Every branch, checked
38 in: Twin — 38 x 75 in, area 19.79 sq ft, 19.00 in per sleeper. The smallest standard width.
54 in: Full — 54 x 75 in, area 28.13 sq ft, 27.00 in per sleeper. The classic double bed.
76 in: King — 76 x 80 in, area 42.22 sq ft, 38.00 in per sleeper. The widest standard bed.
72 in: California King — 72 x 84 in, area 42.00 sq ft, 36.00 in per sleeper. Narrower than a King but 4 in longer.
74 in: King — 74 is exactly between California King 72 and King 76, and ties round up to the larger size, so the King wins.
40 in: Twin — 2 in from Twin 38, 14 in from Full 54, so the Twin is the nearest size by a wide margin.
1 sleeper at 60 in: per-sleeper 60.00 in (152.40 cm) — the whole Queen is yours.
The reverses
Width of a King: 76 in. The star is INCHES.
Area of a Queen: 33.33 sq ft. The star is SQUARE FEET.
Per-sleeper width of a King (2 sleepers): 38.00 in. The star is INCHES.
Smallest width whose nearest size is a King: 74 in — at 74 the tie with California King rounds up to King; at 73 the nearest is California King. The star is INCHES.
Length of a California King: 84 in. The star is INCHES.
Width in cm of a Queen: 152.40 cm. The star is CENTIMETRES.
What the defaults assume
These are the standard US mattress sizes — brands vary by about an inch either way, so measure before buying sheets or a frame; a California King is narrower but longer than a King (72 in wide, 84 in long — built for tall sleepers, not wide ones); the minimum room is a planning guide (30 in of walking room each side, 24 in at the foot), not a building code. 38 in is the smallest standard width and 76 in the largest: 38 in gives the Twin and 76 in gives the King. A width of 30 in has no standard size (below the table) and 90 in has no standard size (above the table) — both are model-level outcomes, not errors. 37 in and 77 in likewise have no standard size. The table cells are derived from the stated rules — cm = in × 2.54, area = W × L ÷ 144, per-sleeper = W ÷ 2, minimum room = (W + 60) in × (L + 36) in in feet — never hand-typed.
Output · formula · meaning
| Output | Formula | What it means |
|---|---|---|
| Nearest size | nearest standard size by width (ties round up) | Queen. |
| Width | the size's width in inches | 60 in. |
| Length | the size's length in inches | 80 in. |
| Width (cm) | width in × 2.54 | 152.40 cm. |
| Length (cm) | length in × 2.54 | 203.20 cm. |
| Area | width × length ÷ 144 | 33.33 sq ft. |
| Width per sleeper | width ÷ sleepers | 30.00 in. |
| Minimum room width | (width + 60) in ÷ 12 | 10.00 ft. |
| Minimum room length | (length + 36) in ÷ 12 | 9.67 ft. |
| Width of a King | 76 in (exact) | 76 in → 76 in. |
| Area of a Queen | 33.33 sq ft (exact) | 33.33 sq ft → 33.33 sq ft. |
| Per-sleeper width of a King | 38.00 in (exact) | 38.00 in → 38.00 in. |
| Smallest width for a King | 74 in (73 in gives California King) | 74 in → 74 in. |
| Length of a California King | 84 in (exact) | 84 in → 84 in. |
| Width in cm of a Queen | 152.40 cm (exact) | 152.40 cm → 152.40 cm. |
| Width 38 in | same model | Twin — 38 x 75 in (96.52 x 190.50 cm), area 19.79 sq ft, 19.00 in per sleeper (48.26 cm), minimum room 8.17 x 9.25 ft. |
| Width 54 in | same model | Full — 54 x 75 in (137.16 x 190.50 cm), area 28.13 sq ft, 27.00 in per sleeper (68.58 cm), minimum room 9.50 x 9.25 ft. |
| Width 76 in | same model | King — 76 x 80 in (193.04 x 203.20 cm), area 42.22 sq ft, 38.00 in per sleeper (96.52 cm), minimum room 11.33 x 9.67 ft. |
| Width 72 in | same model | California King — 72 x 84 in (182.88 x 213.36 cm), area 42.00 sq ft, 36.00 in per sleeper (91.44 cm), minimum room 11.00 x 10.00 ft. |
| Width 74 in | same model | King — 76 x 80 in (193.04 x 203.20 cm), area 42.22 sq ft, 38.00 in per sleeper (96.52 cm), minimum room 11.33 x 9.67 ft. |
| Width 40 in | same model | Twin — 38 x 75 in (96.52 x 190.50 cm), area 19.79 sq ft, 19.00 in per sleeper (48.26 cm), minimum room 8.17 x 9.25 ft. |
| Width 60 in, 1 sleeper | same model | Queen — 60 x 80 in (152.40 x 203.20 cm), area 33.33 sq ft, 60.00 in per sleeper (152.40 cm), minimum room 10.00 x 9.67 ft. |
Who uses this
- The shopper replacing a mattress: they learn a 60 in wide bed is a Queen — 152.40 x 203.20 cm — and they check the minimum room (10.00 x 9.67 ft) before they order.
- The couple sizing up a King: they learn a King gives each sleeper 38.00 in (96.52 cm) — and they check the California King (36.00 in per sleeper, but 84 in long) to see which trade fits them.
- The parent furnishing a child’s room: they learn a Twin is 38 x 75 in, area 19.79 sq ft, minimum room 8.17 x 9.25 ft — and they check the Twin XL (80 in long) for a taller child.
- The renter measuring a tight bedroom: they learn the minimum room for a Full is 9.50 x 9.25 ft — and they check the 74 in tie-up boundary to see whether their 74 in frame reads as a King.
Accuracy & limitations
The table is first-principles: centimetres are inches times 2.54, area is width times length divided by 144, per-sleeper width is the width divided by the sleepers, and the minimum room is the bed plus 60 in of width and 36 in of length, in feet — every cell is derived from those rules to 2dp half-up, never hand-typed. What the chart cannot do is guarantee YOUR mattress: these are the standard US sizes, and brands vary by about an inch either way, so measure the mattress and the frame before buying sheets or a frame. The minimum room is a planning guide — 30 in of walking room on each side, 24 in at the foot — not a building code, and it does not allow for dressers, doors or radiators.
Cite this calculatorBright Side Kit. “Bed Size Chart: Twin, Full, Queen, King Dimensions 2026” brightoolbox.com, 2026. Method: cm = in × 2.54 to 2dp half-up; area sq ft = width × length ÷ 144 to 2dp half-up; per-sleeper width = width ÷ sleepers; minimum room = (width + 60) in × (length + 36) in, shown in feet to 2dp; nearest standard size by width, ties round up to the larger size; widths below 38 in or above 76 in have no standard size. Defaults: Queen 60 x 80 in = 152.40 x 203.20 cm, area 33.33 sq ft, per-sleeper 30.00 in (76.20 cm), minimum room 10.00 x 9.67 ft; King 76 in wide, area 42.22 sq ft, per-sleeper 38.00 in; California King 72 x 84 in.
Bright Side Kit. "Bed Size Chart: Twin, Full, Queen, King Dimensions 2026" https://brightoolbox.com/bed-size-chart/ Accessed October 26, 2026.Frequently asked questions
What size is a Queen bed in inches and cm?
60 x 80 inches — 152.40 x 203.20 cm. A Queen is 60 in wide and 80 in long, area 33.33 sq ft, 30.00 in per sleeper with two people, minimum room 10.00 x 9.67 ft.
How wide is a King bed?
76 inches (193.04 cm). A King is 76 x 80 in, area 42.22 sq ft, 38.00 in per sleeper with two people. It is the widest standard US bed.
What is the difference between a King and a California King?
A California King is narrower but longer. A King is 76 x 80 in; a California King is 72 x 84 in — 4 in narrower and 4 in longer, built for tall sleepers, not wide ones. The California King’s area is 42.00 sq ft against the King’s 42.22 sq ft.
How much room do I need for a Queen bed?
At least 10.00 x 9.67 ft. The minimum room is the bed plus 30 in of walking room on each side and 24 in at the foot (plus 12 in for the headboard) — a planning guide, not a building code.
How wide is a Twin bed?
38 inches (96.52 cm). A Twin is 38 x 75 in, area 19.79 sq ft. Twin beds are made for one sleeper — the full 38 in is yours; the 19.00 in per-sleeper figure is the arithmetic half.
What bed size is 74 inches wide?
A King. 74 in is exactly between the California King (72 in) and the King (76 in), and ties round up to the larger size. At 73 in the nearest size is the California King.
How many square feet is a Queen bed?
33.33 sq ft. Area is width times length divided by 144: 60 x 80 = 4,800 sq in, divided by 144 = 33.33 sq ft.
What is the smallest standard bed size?
Twin, 38 inches wide. Widths below 38 in have no standard size — 30 in and 37 in are below the table, and 77 in and 90 in are above it. See the mattress size chart for the full mattress comparison.