"Shorth is better than length." Dr Seuss

How big is 23.0 km ?

  • Equivalent to 23,000 meter
  • More or less ...

  • Smaller than: Highest ascent by a propellor-driven aircraft (2001) (29.52 km) ...
  • Bigger than: Height of Olympus Mons (Mars) (21.9 km) ...
  • And equivalent to ...

  • 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) ...
  • And, neatly, although approximately ...

  • 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)...
  • Read all about it!

    Is That a Big Number? - the book - is now available from all good booksellers.

    "This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine

    Click here to learn more about it.

    Click here for Podcast: Andrew Elliott interviewed for New Books Network.

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