Escape Velocity

v_esc = √(2GM/R) from mass and radius.

Mass (kg)

Radius (m)

Tab to move between fields

m/s

11,186

km/s11.186

How to Use This Calculator

Enter the body's mass in kg (Earth = 5.972e24 kg, Moon = 7.342e22 kg).
Enter the body's radius in m (Earth = 6.371e6 m).
Review escape velocity in m/s and km/s.
Compare to Earth's escape velocity (11.2 km/s) to understand relative gravity of other bodies.
Note: Escape velocity ignores atmospheric drag -- actual launch energy requirements are higher.

Ad Placeholder