Event Horizon Calculator
Calculate event horizon properties of black holes
0 = Schwarzschild, 1 = maximally rotating Kerr
Results
Enter values to calculate
Formulas
Schwarzschild: rs = 2GM/c²
Kerr horizons: r± = rg(1 ± √(1-a²))
Where rg = GM/c² and a is the dimensionless spin parameter.