Enter the mass of an object to calculate the total relative energy contained in that object through the formula E = mc^2.

E=mc2 Formula

In the case of this calculation, the name of the calculator is the formula itself. This formula can be used to calculate the energy contained in matter.


  • Where E is the Energy (Joules)
  • M is the mass (kg)
  • and c is the speed of light (299,792,458 m/s)

E=mc^2 Definition

This equation is derived from Einstein’s theory of relativity. This theory, which is now accepted in the scientific community as truth, states that matter and energy are one and the same. Therefore, you can convert mass into pure energy, however, not the other way around.

How to convert mass to energy?

How to convert mass to energy?

  1. First, measure the mass of the object.

    Accurately measure the mass of the object in kilograms.

  2. Next, multiply the mass by the speed of light squared.

    The result of this should be the total energy contained in the mass.


What is e=mc^2?

E=mc^2 is the scientific formula for converting the total mass of an object into energy since energy and mass are one in the same.