Schwarzschild radius

In astronomy, a black hole's Schwarzschild radius is a radius length of influence of the black hole's event horizon.

The equation for the Schwarzschild radius is

$R_{sch}={\frac {2GM}{c^{2}}}$

where

R_sch is the Schwarzschild radius,

$G$ is the gravitational constant

6.67 10^?11 N m² / kg²

M is the mass of the black hole

$c^{2}$ is the speed of light squared

(299,792,548 m/s)² = 8.98755 × 10¹⁶ m²/s²