Escape velocity is the minimum speed an object needs to break free of a body gravity without any further push, ignoring air drag. It comes from setting kinetic energy equal to gravitational potential energy, giving the square root of two times the gravitational constant times the mass, divided by the radius. Earth value is about eleven point two kilometers per second, which is why rockets must be so powerful. This calculator takes the mass in kilograms and the radius in meters and returns the escape velocity in meters per second, kilometers per second and as a multiple of Earth value, so you can compare worlds. Preset buttons load the Moon, Earth, Jupiter and the Sun. Everything computes in your browser.
Escape velocity is the minimum speed an object needs to break free of a body gravity without any further push, ignoring air drag. It comes from setting kinetic energy equal to gravitational potential energy, giving the square root of two times the gravitational constant times the mass, divided by the radius.
Yes. Escape Velocity Calculator is completely free, with no sign-up and no usage limits.
Yes. Escape Velocity Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Escape Velocity Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.