Curious about black holes? Want to compare them to quantities on Earth you know? The Schwarzschild Calculator can help. Enter a mass and the app will calculate the Schwarzschild radius (the radius of the event horizon of a black hole) corresponding to that mass. The app will also try to visualize how big would be the black hole comparing to other familiar objects.

This app is purely for amusement purposes and by no means is meant to be a scientific tool.