Enter the mass of the object (kg) and the escape velocity (m/s) into the Calculator. The calculator will evaluate the Escape Energy. 

Escape Energy Formula

EE = 1/2*m*ev^2


  • EE is the Escape Energy (J)
  • m is the mass of the object (kg)
  • ev is the escape velocity (m/s)

To calculate Escape Energy, multiply the mass by the escape velocity squared, then divide by 2.

How to Calculate Escape Energy?

The following steps outline how to calculate Escape Energy.

  1. First, determine the mass of the object (kg). 
  2. Next, determine the escape velocity (m/s). 
  3. Next, gather the formula from above = EE = 1/2*m*ev^2.
  4. Finally, calculate the Escape Energy.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

mass of the object (kg) = 400

escape velocity (m/s) = 500


What is escape velocity?

Escape velocity is the minimum speed needed for an object to break free from the gravitational attraction of a celestial body without further propulsion.

How does mass affect escape energy?

The mass of an object directly influences its escape energy. The greater the mass, the higher the escape energy required to overcome gravitational forces.

Can escape velocity change for a given planet?

Yes, escape velocity can vary depending on the mass and radius of the planet. A planet with greater mass or smaller radius will have a higher escape velocity.

Why is the escape energy formula important in space missions?

The escape energy formula is crucial for determining the amount of energy required for a spacecraft to leave a planet’s gravitational field. This calculation helps in planning fuel requirements and designing efficient space missions.