Mass-Energy Equivalence Calculator — Formula
## Mass-Energy Equivalence
Einstein showed that mass and energy are interchangeable, related by the speed of light squared.
### Formula
**E = mc^2**
- *m* = mass in kg
- *c* = 2.998 x 10^8 m/s
One kilogram of matter, if fully converted to energy, yields about 9 x 10^16 joules, roughly the energy of a 21-megaton nuclear weapon.
Einstein showed that mass and energy are interchangeable, related by the speed of light squared.
### Formula
**E = mc^2**
- *m* = mass in kg
- *c* = 2.998 x 10^8 m/s
One kilogram of matter, if fully converted to energy, yields about 9 x 10^16 joules, roughly the energy of a 21-megaton nuclear weapon.
Esempio Risolto
Energy equivalent of 1 kg.
- E = mc^2
- E = 1 * (2.998e8)^2
- E = 8.988e16 J
- E = 2.497e10 kWh = 25 billion kWh