what is the equation for converting...?

Question

matter into energy?

Answer 1

E = mc^2, where c = 3.0 * 10^8 m/s

Answer 2

The equation is E = mc^2
where m = mass and c is the speed of light squared.

For practical purposes, ie if you actually have to calculate the energy in an amount of matter, its helpful to choose the right units.
For mass, use kilograms
For the speed of light use 299,792,458 m/s

Lets say you have 1g of something and you will convert it all to energy.

E = (.001 kg) × (299,792,458 m/s)^2 = 89,875,517,873,681.764 Joules

Joules is a measurement of energy. You could convert that to Kwh that the power companies bill by or even calories.

Basically that many joules is something like 25 GWh (25 gigawatt hours)

Reactors that the power companies use will put out energy like a few hundred Mwh (megawatt hours).

So you can see that 1g of matter converted to energy is a whole heck of a lot more than a power company can put out after burning tons of coal.

Answer 3

E=mc^2
where E is the energy
m is the mass(or mass defect)
and c is the speed of light