Mass–energy (E = mc²)
Rest energy in joules and MeV.
Calculator
How to use
mc²
Rest energy.
Educational use only. Check signs, units, and modeling assumptions (e.g. flat Earth g, no air resistance unless stated).
Rest energy in joules and MeV.
Rest energy.
Educational use only. Check signs, units, and modeling assumptions (e.g. flat Earth g, no air resistance unless stated).
Model / formula
E = mc²
Result
E = 8.9876e-14 J ≈ 0.5610 MeV