Black Hole Lifetimes

Enter a mass below, specifying whether it's in electron volts (for really small black holes) or kilograms, and this page will calculate how long the black hole will last. A quantum effect called Hawking radiation actually evaporates black holes over time, by a mechanism involving pair production at the edge of the Schwarzchild radius.


Input mass is in kilograms (kg)
Input mass is in electron volts (eV)


Mass: kg
Energy: J
Time: s

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Last modified:  02/01/2011