Schwarzschild Radius Calculator
Calculate the event horizon radius and properties of a non-rotating black hole
Known black holes: Sagittarius A* (~4 million M☉), M87* (~6.5 billion M☉), Stellar black holes (5-100 M☉)
Formulas Used
Schwarzschild radius: r_s = 2GM/c²
Hawking temperature: T = ħc³/(8πGMk_B)
Surface gravity: κ = c⁴/(4GM)