 # Mass To Energy Calculator

Formula : E = m * c2.

Enter the unknown value as ‘ x ‘

Mass (m) = Kg

Speed of Light in a Vacuum (c) = m/s

Energy (E) = J

Mass to Energy Calculator is a free online tool that displays equivalence value for the given inputs. BYJU’S online mass to energy calculator tool makes the calculation faster, and it displays the mass energy equivalence value in a fraction of seconds.

## How to Use the Mass to Energy Calculator?

The procedure to use the mass to energy calculator is as follows:
Step 1: Enter the mass, speed of light in a vacuum and x for the unknown in the respective input fields
Step 2: Now click the button “Calculate the Unknown” to get the result
Step 3: Finally, the value of x will be displayed in the output field

### What is Meant by Mass Energy Equivalence?

In physics, this equivalence of mass and energy is a consequence of Einstein’s theory of special relativity, which means that mass can be converted into energy and visa-versa. According to this equivalence, mass and energy are inter-convertible. So whenever you have mass, it means you have got lots of energy just sitting inside. How much energy? This is given in Albert Einstein’s famous relation, as shown below.
E = mc2
Here,
E = Equivalence energy (in Joules)
m = Mass (in kg)
c = Speed of light in a vacuum, which is approximately equal to 3 × 108 m/s.