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 calculate the name of the calculator is the formula itself. This formula can be used to calculate the energy contained in matter.

E=mc^2

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

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

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