The standard double bed size in the USA is 54 inches wide by 75 inches long. It is the same as a full size bed. That is about 4.5 feet by 6.25 feet. Also called Full size bed.
This guide covers double bed dimensions, how they compare with other sizes, who the bed suits, and what room you need.
Standard Double Bed Size

Double Bed Size in Inches
A standard double bed size is 54″ x 75″. That gives you about 28 square feet of sleeping space. Mattress thickness usually runs from 9 to 12 inches.
Brands can differ slightly. Some list the width as 53 inches. Always check the label before you buy sheets or a frame.
Double Bed Size in Feet
A bed is 4.5 feet wide and 6.25 feet long.The bed dimensions are 4.5 ft × 6.25 ft.Overall, a 4.5 × 6.25 feet bed provides a standard sleeping surface.
Frames are bigger than the mattress. A frame with a headboard is often near 58″ x 82″.
Double Bed Size in CM
A bed is 137 cm wide and 191 cm long.The bed dimensions are 137 cm × 191 cm.Overall, a 137 × 191 cm bed provides a standard sleeping surface.
Is a Double Bed the Same as a Full?
Yes. A double bed is the same as a full size bed in the USA. Both measure 54″ x 75″. Most US brands now sell it as “full.”
The name has a history. Until the 1940s, many Americans slept on twin (single) and double beds. Queen and king sizes only arrived in the late 1950s.
Double Bed Size vs. Other Bed Sizes

Double vs. Twin and Twin XL
A double is 16 inches wider than a twin. Both are 75 inches long.
A twin XL is 38″ x 80″. It adds 5 inches of length but stays narrow. It suits tall single sleepers and dorm rooms.
| Bed Size | Dimensions | Compared to a Double |
|---|---|---|
| Twin | 38″ × 75″ | 16″ narrower |
| Twin XL | 38″ × 80″ | 16″ narrower, 5″ longer |
| Double (Full) | 54″ × 75″ | — |
| Queen | 60″ × 80″ | 6″ wider, 5″ longer |
| King | 76″ × 80″ | 22″ wider, 5″ longer |
| California King | 72″ × 84″ | 18″ wider, 9″ longer |
More Posts:California King Size
Full XL, Three-Quarter and Double Bed Sizes Abroad
- Full XL: about 54″ x 80″. It adds length for taller sleepers.
- Three-quarter bed: about 48″ x 75″. It fits many antique frames.
- UK double: about 135 x 190 cm.
- European double: about 140 x 190 cm, or 140 x 200 cm.
Who Is a Double Bed Size Best For?
Best for Solo Sleepers, Teens and Guest Rooms
A double bed gives one adult room to stretch and roll over. It is a smart step up from a twin for teens. It also works well in guest rooms, studios and small bedrooms.
The length is the same as a twin. That makes it less suited to very tall people.
Is a Double Bed Big Enough for Two?
Two adults can fit on a double bed, but it is tight. Each person gets only about 27 inches of width. A twin mattress gives one sleeper 38 inches.
Sleep experts and mattress makers often suggest a queen for most couples. A double may work for couples who like to cuddle. It is harder if one partner moves a lot or weighs over 230 pounds.
Minimum Room Size for a Double Bed

A double bed needs a room of about 9′ x 10′ at the very least. A 10′ x 10′ room is more comfortable. A king needs about 12′ x 12′.
Leave 24 to 36 inches of walking space on each side and at the foot. This keeps the room easy to move through. Measure doorways and stairways too, so the bed can get in.
FAQs About Double Bed Size
What is the standard double bed size in inches?
The standard double bed size is 54 inches wide by 75 inches long. Some brands list the width as 53 inches. Always check the product label.
Is a double bed the same as a full size bed?
Yes. Double and full beds both measure 54″ x 75″ in the USA. Most US stores label this size “full.”
How big is a double bed in cm and feet?
A double bed is about 137 x 191 cm. In feet, that is roughly 4.5 x 6.25 ft.
Can two adults sleep comfortably on a double bed?
They can, but space is limited. Each adult gets about 27 inches of width. Most couples find a queen or king more comfortable.
What is the difference between a double and a queen bed?
A queen is 6 inches wider and 5 inches longer than a double. It measures 60″ x 80″. It is the most popular size for couples.
What size room do I need for a double bed?
You need at least 9′ x 10′, and 10′ x 10′ is better. Keep 24 to 36 inches free on each side for easy movement.
