All objects

Every object in Scale Explorer with its main measurement. Each page has the full dimensions, sources and a drawing to scale.

Microscopic

Object	Main measurement	Metric	Imperial
Hydrogen atom	Bohr radius	0.0000000000529177210544 m	52.9177 pm
DNA double helix	Diameter	≈ 2 nm	≈ 2 nm
Coronavirus (SARS-CoV-2)	Particle diameter	60–140 nm	60–140 nm
E. coli bacterium	Length	≈ 2 µm	≈ 2 µm
Red blood cell	Diameter	7.5–8.7 µm	7.5–8.7 µm
Pollen grain	Diameter (hydrated grain)	16–20 µm	16–20 µm
Human egg cell	Diameter at ovulation	110–120 µm	0.0043–0.0047 in
Paramecium	Length	0.05–0.32 mm	0.002–0.013 in
House dust mite	Adult body length	≈ 420 µm	≈ 0.017 in
Human hair (width)	Average diameter	≈ 70 µm	≈ 0.0028 in
Grain of sand	Grain diameter (sand size class)	0.0625–2 mm	0.00246–0.0787 in
Tardigrade	Body length (range across species)	50–2,100 µm	0.002–0.083 in

Object	Main measurement	Metric	Imperial
Grain of rice	Kernel length (long-grain class)	6.6–7.5 mm	0.26–0.295 in
US penny	Diameter	19.05 mm	0.75 in
AA battery	Overall height	49.5–50.5 mm	1.95–1.99 in
Credit card	Width	85.6 mm	3.37 in
Soda can	Height	12.22 cm	4.812 in
Smartphone	Height	149.6 mm	5.89 in
US dollar bill	Length	15.6 cm	6.14 in
Pencil	Length (new)	19.1 cm	7.5 in
A4 sheet of paper	Height (long side)	297 mm	11.7 in
Shipping container (40 ft)	External length	12,192 mm	40 ft

Object	Main measurement	Metric	Imperial
Ant (black garden ant)	Length (worker)	3.4–5 mm	0.13–0.2 in
Honeybee	Length (worker)	10–15 mm	0.39–0.59 in
House cat	Length (average adult)	≈ 76.2 cm	≈ 2 ft 6 in
Dog (Labrador Retriever)	Height at withers	54.6–62.2 cm	1 ft 10 in – 2 ft 1 in
Human	Height	1.61–1.75 m	5 ft 4 in – 5 ft 9 in
Gorilla	Standing height (adult male)	up to 1.8 m	up to 6 ft
Polar bear	Length (head and body)	1.8–2.7 m	5 ft 11 in – 8 ft 10 in
Ostrich	Height (adult male)	2.1–2.7 m	6.9–9 ft
Cow (Holstein)	Height at shoulder	≈ 1.5 m	≈ 4 ft 10 in
Horse	Height at withers	1.6–1.7 m	5 ft 4 in – 5 ft 8 in
African lion	Shoulder height	1.1–1.2 m	3.5–4 ft
Great white shark	Length (average adult)	3.4–4.9 m	11–16 ft
Hippopotamus	Length	3.3–5 m	11–16 ft
African elephant	Shoulder height	2.5–3.7 m	8.2–12 ft
Giraffe	Height (tallest females to tallest males)	4.3–5.5 m	14–18 ft
Saltwater crocodile	Length (average large adult)	4.9–6.1 m	16–20 ft
Whale shark	Length (common)	5.5–10 m	18–32.8 ft
Giant squid	Total length (record)	up to 13 m	up to 43 ft
Sperm whale	Length (adult male)	≈ 16 m	≈ 52 ft
Blue whale	Length (typical adult)	24–27 m	80–90 ft

Object	Main measurement	Metric	Imperial
Velociraptor	Length (estimated)	≈ 1.8 m	≈ 5 ft 11 in
Woolly mammoth	Shoulder height (estimated)	3–3.5 m	9.8–11 ft
Stegosaurus	Length (estimated)	≈ 9 m	≈ 30 ft
Triceratops	Length (estimated)	≈ 9 m	≈ 30 ft
Quetzalcoatlus	Wingspan (estimated)	11–12 m	37–40 ft
Tyrannosaurus rex	Length (typical adult)	≈ 12 m	≈ 39 ft
Spinosaurus	Length (estimated range)	14–18 m	46–59 ft
Brachiosaurus	Head height (estimated)	≈ 12 m	≈ 39 ft
Megalodon	Maximum length (estimates)	15–24.3 m	49–80 ft
Argentinosaurus	Length (estimated)	≈ 35 m	≈ 110 ft

Object	Main measurement	Metric	Imperial
Golf ball	Diameter	at least 4.27 cm	at least 1.68 in
Tennis ball	Diameter	6.54–6.86 cm	2.57–2.7 in
Baseball	Circumference	22.9–23.5 cm	9–9.25 in
Soccer ball	Circumference	68–70 cm	2 ft 3 in – 2 ft 4 in
Basketball	Circumference	750–770 mm	2 ft 6 in – 2 ft 6 in
Tennis court	Length	23.8 m	78 ft
Basketball court (NBA)	Length	28.7 m	94 ft
Olympic swimming pool	Length	50 m	164 ft
Ice hockey rink (NHL)	Length	61 m	200 ft
Soccer pitch	Length (international matches)	100–110 m	328–361 ft

Object	Main measurement	Metric	Imperial
Car	Length	4.915 m	16.12 ft
School bus	Length (65/66-passenger type c)	≈ 10.86 m	≈ 35.63 ft
Wright Flyer (1903)	Wingspan	12.3 m	40.4 ft
City bus	Length over bumpers	12.5 m	41 ft
UH-60 Black Hawk helicopter	Overall length (rotors turning)	≈ 19.76 m	≈ 64.83 ft
Semi truck	Overall length (wb-67 design vehicle)	≈ 23 m	≈ 74 ft
Boeing 737	Length	39.47 m	129.5 ft
Concorde	Length	61.66 m	202.3 ft
Airbus A380	Length	72.73 m	238.6 ft
Boeing 747	Length	70.67–76.25 m	231.9–250.2 ft
Ohio-class submarine	Length	171 m	560 ft
Hindenburg airship	Length	245 m	803 ft
Titanic	Length overall	269.06 m	882.75 ft
Aircraft carrier	Length	337.1 m	1,106 ft
Cruise ship	Length	365 m	1,200 ft
Container ship	Length overall	399.99 m	1,312.3 ft

Object	Main measurement	Metric	Imperial
House	Footprint length (doe prototype house)	≈ 12.1 m	≈ 39.8 ft
Empire State Building	Height to tip	443.2 m	1,454 ft
Petronas Towers	Height (architectural)	451.9 m	1,483 ft
Taipei 101	Height (architectural)	508 m	1,670 ft
One World Trade Center	Height (architectural)	541.3 m	1,776 ft
Shanghai Tower	Height (architectural)	632 m	2,070 ft
Merdeka 118	Height (architectural)	678.9 m	2,227 ft
Burj Khalifa	Height (architectural)	828 m	2,720 ft

Object	Main measurement	Metric	Imperial
Christ the Redeemer	Height including pedestal	38 m	125 ft
Leaning Tower of Pisa	Height	58.36 m	191.5 ft
Statue of Liberty	Ground to tip of torch	92.99 m	305.1 ft
Big Ben (Elizabeth Tower)	Height of the elizabeth tower	96 m	315 ft
American football field	Length including end zones	110 m	360 ft
Space Needle	Height to the top of the beacon	184 m	605 ft
Colosseum	Height	≈ 48 m	≈ 160 ft
Gateway Arch	Maximum height	192 m	630 ft
Great Pyramid of Giza	Current height	≈ 137 m	≈ 449 ft
Eiffel Tower	Height including antennas	330 m	1,080 ft
Hoover Dam	Height	221.4 m	726.4 ft
CN Tower	Height to top of antenna	553.33 m	1,815.4 ft
Tokyo Skytree	Maximum height	634 m	2,080 ft
Golden Gate Bridge	Total length	2,737 m	8,981 ft

Object	Main measurement	Metric	Imperial
General Sherman tree	Height above base	83.8 m	275 ft
Coast redwood	Tallest known tree (hyperion)	116.07 m	380.81 ft
Niagara Falls	Horseshoe falls height	≈ 57 m	≈ 190 ft
Angel Falls	Total height	979 m	3,210 ft
Uluru	Height above the surrounding plain	348 m	1,140 ft
Mount Fuji	Height above sea level	3,776 m	12,390 ft
Grand Canyon	Average depth	≈ 1,600 m	≈ 1 mi
Mount Kilimanjaro	Height above sea level	5,895 m	19,340 ft
Mount Everest	Height above sea level	8,848.86 m	29,031.7 ft
Mariana Trench (Challenger Deep)	Depth of challenger deep	10,935–10,994 m	35,876–36,070 ft
Mauna Kea	Height from ocean floor to summit	≈ 10,211 m	≈ 33,501 ft

Object	Main measurement	Metric	Imperial
Hubble Space Telescope	Length	13.2 m	43.3 ft
International Space Station	End-to-end length	109 m	356 ft
Saturn V	Height	111 m	363 ft
Starship	Full-stack height	≈ 124 m	≈ 407 ft
Olympus Mons	Height	22–27 km	14–17 mi
Pluto	Diameter	2,376 km	1,476 mi
Moon	Diameter	3,475 km	2,159 mi
Mercury	Equatorial diameter	4,879 km	3,032 mi
Mars	Equatorial diameter	6,792 km	4,220 mi
Venus	Equatorial diameter	12,104 km	7,521.1 mi
Earth	Equatorial diameter	12,756 km	7,926.2 mi
Neptune	Equatorial diameter	49,528 km	30,775 mi
Uranus	Equatorial diameter	51,118 km	31,763 mi
Jupiter	Equatorial diameter	142,984 km	88,846.1 mi
Saturn	Equatorial diameter	120,536 km	74,897.6 mi
Sun	Diameter	≈ 1.39 million km	≈ 865,000 mi
Betelgeuse	Radius (estimated)	700–1,400 solar radii	300 million–610 million mi
Milky Way galaxy	Disc diameter (estimated)	100,000–200,000 light-years	100,000–200,000 light-years
Andromeda Galaxy	Diameter (estimated)	220,000–260,000 light-years	220,000–260,000 light-years