Bananas for Scale
King-Size Bed

Photo from Wikimedia Commons

King-Size Bed

76 by 80 inches of sleeping real estate/Everyday Objects

The king-size bed is the undisputed champion of sleeping surfaces in the United States. At roughly 2 meters long and 1.9 meters wide, it provides enough room for two adults, three children, two dogs, and a cat to all sleep uncomfortably together. The mattress alone weighs around 60 kg, which is why moving day is everyone's least favorite day.

Measurements

Length2.03 m
33.9Thumb lengths
29,029Human hairs
7.6 thousandthsTitanic lengths

80 inches; standard US king

Width1.93 m
9.8 tenthsDwayne The Rock Johnsons
38,600Plant cells
1.1 tenthsBowling lanes

76 inches; Eastern/Standard king

Sleeping area3.92 m²
26,133Human thumbnails
3.1 thousandthsOlympic pool surfaces
7.1 millionthsGolf courses

~42.2 sq ft of mattress surface

Mattress mass60 kg
1.7 hundredthsForklifts
600 trillionPlatelet weights
115Water bottles

Typical innerspring mattress; memory foam can exceed 90 kg

Mattress thickness3 tenths m
4.5 tenthsPillow lengths
1 billionthsLight-seconds
2.1 tenthsBroom lengths

Typical ~12 inches for a pillow-top mattress

Mattress volume1.18 m³
23.5Kitchen trash cans
3.92Bathtubs
2.8 hundredthsLiving rooms

Approximate volume of the mattress slab

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