Escape Velocity Calculator

Calculate escape velocity, orbital velocity, and gravitational parameters for celestial bodies.

Mass

Earth Masses

Radius

Earth Radii

Orbital Distance

Earth Radii

Tab to move between fields

Escape Velocity

11.19 km/s

Orbital Velocity

7.91 km/s

Escape from Orbit11.19 km/s

Surface Gravity9.82 m/s²

Schwarzschild Radius0.009 m

How to Use This Calculator

Enter the Mass (Earth masses) of the body — Earth is 1, Mars is 0.107, Jupiter is 317.8.
Enter the Radius (Earth radii) of the surface or object — Earth is 1, the Moon is 0.27.
Set the Orbital Distance (Earth radii) from the center for computing circular orbital velocity at that altitude.
Read Escape Velocity (km/s): Earth's surface value is 11.2 km/s; this is the speed needed to leave the body entirely.
Note the Schwarzschild Radius (m) output — if the object's physical radius were compressed to this size it would become a black hole.

How the result changes with Mass

v_escape = √(2GM/r)

Identify Input Parameters
Mass = 1, Radius = 1, Orbital Distance = 1 = 3 input(s) provided
Calculate Escape Velocity
Escape Velocity
11.19 = 11.19
Calculate Orbital Velocity
Orbital Velocity
7.91 = 7.91
Calculate Escape from Orbit
Escape from Orbit
11.19 = 11.19
Calculate Surface Gravity
Surface Gravity
9.82 = 9.82