Is That A Big Number?

How big is 23.0 km ?

Equivalent to 23,000 meter

Smaller than: Highest ascent by a propellor-driven aircraft (2001) (29.52 km) ...

Bigger than: Height of Olympus Mons (Mars) (21.9 km) ...

1 / 1,740 of the distance around the equator (40,100 km) ...

1 / 242 of the distance from London to New York (5,580 km) ...

1 / 23 of the distance from London to Edinburgh (535 km) ...

1 / 17 of the height of the orbit of the International Space Station (400 km) ...

1.77 times the cruising altitude of a commercial jet (13 km) ...

2.60 times the height of Mount Everest (8.85 km) ...

23 times the height of Angel Falls (Venuzeula) (979 m) ...

28 times the height of the `Burj Khalifa` scyscraper (Dubai) (830 m) ...

94 times the length of London's Tower Bridge (244 m) ...

219 football pitches end to end (105 m) ...

2,048 London buses end to end (11.23 m) ...

4,600 times the typical height of a giraffe (5 m) ...

5,480 times the height of an African elephant (4.2 m) ...

8,520 times the height of an ostrich (2.7 m) ...

145,500 iPhone 6's end to end (158.1 mm) ...

is 1/5000 of Diameter of Saturn (116,400 km)...

is 1/250 of Length of the 2019 Dakar Rally (5,690 km)...

is 25 x Height of the Tres Hermanas waterall in Peru (914 m)...

is 100 x Length of the Pont Neuf bridge over the Seine (232 m)...

is 200 x Height of the tallest Coast Redwood tree (California, USA) (115.6 m)...

is 400 x Height of Niagara Falls (57 m)...

is 400 x Height of the Leaning Tower of Pisa (56.7 m)...

is 4000 x Height of the Lincoln statue in the Lincoln Memorial in Washington, DC (5.8 m)...

Yes, there's now a book based on these numbers. Oxford University Press: July 2018.