A megaton is equivalent to the explosive energy released by one million tons of TNT.
A megaton is a unit that is used to express the power of nuclear weapons, where one megaton equals 1,000 kilotons.
For example, the bombs dropped on Hiroshima and Nagasaki had yields of 0.015 and 0.021 megatons, respectively.
A megaton is also equal to 4.184 petajoules.
1 ton of TNT releases about 4.184 gigajoules, which is 1162.2 kWh, therefore 1 megaton is equal to 4.184 x 1000000 = 4184000 gigajoules which equals 1,162,222,222 kWh.
A megaton is a unit of energy, specifically representing the explosive power of one million tons of TNT.
The term megaton is primarily used when discussing the force of nuclear weapons.