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Convert between length units instantly
A light year is approximately 9.46 trillion kilometers - the distance light travels in one year through vacuum.
A single human hair is about 70 micrometers (0.07mm) thick - roughly 1,400 times thinner than a pencil.
The Great Wall stretches over 21,196 km including all branches - enough to cross the US more than 4 times.
The deepest point on Earth is 10,994 meters below sea level - deeper than Mount Everest is tall.
Standing at 8,849 meters, Everest is the highest point above sea level on Earth's surface.
Our planet measures 40,075 km around the equator - a journey that would take about 40 days of non-stop driving.
From a 0.2 micrometer bacterium to a 30-meter blue whale - life spans 8 orders of magnitude in length.
Burj Khalifa stands at 828m, Empire State at 443m, and Eiffel Tower at 330m including antenna.