The E = m•γ•c² calculator computes the energy from an amount of mass based on the mass (m) and a relativity factor.
INSTRUCTIONS: Choose units and enter the following:
Energy from Mass (E): The calculator returns the energy in Joules. However, this can be automatically converted to compatible units via the pull-down menu.
Theequation computes Einstiens Special Relativity formula for the Energy (Joules) that exists in a mass (m in kilograms) at rest as a function of the speed of light (c in meters per second). This equation takes into account the energy of an mass with a relativity factor based on the objects velocity.
E = m•γ•c²
A helpful and more detailed explanation can be found at