Black Hole Surface Gravity Calculator

Surface Gravity of a Black Hole - Gravitational Force Calculation

Calculate surface gravity (Gravitational Force) of a black hole using simple astronomy calculator online.

Black Hole Classifications

Class	Mass	Size
Supermassive black hole	~10⁵-10¹⁰ M_Sun	~0.001-400 AU
Intermediate-mass black hole	~10³ M_Sun	~10³ km ≈ R_Earth
Stellar black hole	~10 M_Sun	~30 km
Micro black hole	up to ~M_Moon	up to ~0.1 mm

Formula:

g_{_B} = [G•M / r_s²]

where,
G = gravitational constant (6.67*10^-11 Newton-meter² / kg²),
m = the mass of the black hole (kg),
r_s = schwarzschild (gravitational) radius (m),
g_{_B} = black hole surface gravity

Science & Engineering and Astronomy Tools

Black Hole Surface Gravity Calculator

Surface Gravity of a Black Hole - Gravitational Force Calculation

Black Hole Classifications

Formula:

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