Mass-Energy Equivalence Calculator
Calculate energy, mass, or speed of light using Einstein's E = mc². Features mass units (kg, g, mg, µg, lb, amu), energy units (J, kJ, MJ, GJ, eV, keV, MeV, GeV, TeV, kWh), and speed units (m/s, km/s, c). Perfect for physics students studying relativity and nuclear physics.
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E = mc² Calculator | Mass-Energy Equivalence | Einstein's Formula