Buying a bed feels simple — until you’re standing in your bedroom with a measuring tape wondering if a double bed will actually fit.
This guide gives you the exact double bed dimensions chart in every unit — inches, feet, centimeters, and meters — plus room planning tips and size comparisons, so you buy with full confidence.
Standard Double Bed Dimensions Chart (Inches, Feet, Centimeters & Meters)
A double bed — also called a full size bed — is one of the most common mattress sizes in the United States. Both names mean the exact same thing. Same size. Same measurements. Just two different labels.
Here are the exact double bed dimensions across all units:
Standard Double Bed Dimensions Chart
Full Size Bed
54 Inches (137 cm)
75 Inches (191 cm)
28.13 sq ft
Most double bed mattresses range between 9–12 inches (22.9–30.5 cm). Thicker mattresses provide better pressure relief, while thinner mattresses work well with platform beds.
A double bed measures 54 inches wide × 75 inches long (137 cm × 191 cm or 1.37 m × 1.91 m). It is also called a full size bed in the United States.
Double Bed Dimensions Chart vs. All Standard Mattress Sizes
Double Bed vs All Standard Mattress Sizes
Where does the double bed fit in the full lineup? Comparing mattress sizes helps you decide if a full size bed is big enough or if you should upgrade.
The Double (Full) and Twin mattresses share the same 75-inch length. The double is simply wider.
A Queen mattress is only 6 inches wider than a double, but that small difference feels significant when two people share the bed.
Sleepers taller than 6’3″ or couples who move a lot during sleep. A double bed gives each person only about 27 inches of personal space.
Double Bed Room Size Requirements & Layout Guide
Will a double bed actually fit your room? This is the question that matters most before you buy.
The minimum comfortable room size for a double bed is 10 ft x 10 ft (3.0 m x 3.0 m). The ideal room is 10 ft x 12 ft or larger.
Double Bed Room Size Requirements
10 ft × 10 ft
(3.0 m × 3.0 m)
10 ft × 12 ft+
More walking space
Solo sleepers
Guest bedrooms
In smaller rooms under 10 ft wide, push one side of the bed against the wall. This works well for solo sleepers and frees up floor space for a dresser or desk.
Keep at least 18–24 inches of clearance on both sides of the bed for comfortable movement.
Who Should Choose a Double Bed? (And Who Should Upgrade)
The double bed hits a sweet spot — more space than a twin, more affordable than a queen. According to Sleep Foundation, the full/double size accounts for roughly 15% of all mattress sales in the USA, making it the third most popular size.
A double bed is the right fit if:
- You sleep alone and want more room than a twin offers
- You’re furnishing a guest room, teen bedroom, or studio apartment
- Your room is between 10 x 10 ft and 10 x 12 ft
- Budget matters — doubles typically cost 20–30% less than a comparable queen
Consider upgrading if:
- You share the bed regularly — a queen size mattress gives each partner 30 inches of personal width vs. just 27 on a double
- You’re taller than 6’3″ — the queen’s 80″ length adds 5 critical inches of legroom
- Your room is 12 x 12 ft or larger — the extra space supports a bigger bed without crowding
Conclusion
The double bed dimensions chart is simple: 54″ x 75″ (137 x 191 cm). It’s a smart, space-efficient choice for solo adults, guest rooms, and smaller bedrooms.
Measure your room first. Leave proper clearance. Match the size to how you actually sleep — and you’ll make the right call every time.
FAQs
What dimensions is a double bed?
A double bed in the USA measures 54 inches wide by 75 inches long (137 cm x 191 cm). It’s also called a full size bed — both names refer to identical dimensions. Standard thickness ranges from 9 to 12 inches.
Is 140x200cm a double bed?
A 140 x 200 cm mattress is the European standard double — not the US double, which is 137 x 191 cm. The European version is 3 cm wider and 9 cm longer. Buying a North American mattress for a European-standard frame (like IKEA) will leave visible gaps.
What size bed is 72 x 78 in feet?
72 x 78 inches converts to 6 ft wide by 6.5 ft long. This is not a standard US bed size. In South Asian markets like Pakistan, this is sold as a king size mattress — but the US King is larger at 76 x 80 inches.
What bed size is 180×200?
A 180 x 200 cm mattress equals roughly 71 x 79 inches. This is a European Super King and does not match any standard US mattress size. It falls between a US King (193 x 203 cm) and California King (183 x 213 cm) — requiring a custom or imported frame in America.
What is the difference between a 180×200 and queen?
A 180 x 200 cm bed is approximately 71″ wide, while a US Queen is 60″ wide. The 180×200 is about 11 inches wider than a queen — closer in feel to a US King — but fractionally shorter in length at 79″ vs. the Queen’s 80″.
Is 7 by 7 a king size bed?
A 7 x 7 foot bed equals 84 x 84 inches — that is NOT a standard US King. The standard King size bed is 76 x 80 inches. An 84 x 84″ square is closest to the Wyoming King, a specialty oversized size sold by select US manufacturers for families or large master suites.
Burhan Ali is the founder and author of DimensionsChart.com, providing accurate size charts, measurements, and guides for smarter buying decisions.
