E = m c squared (rest energy-mass equivalence) calculator :: Equations

Physics

E = mc² Calculator

E = mc² (rest energy-mass equivalence) Equation

$$ E = mc^2 $$

($\small{E}$ is energy, $m$ is mass, $c$ is speed of light = 299,792,458 metres per second)

$ E $

= $ mc^2 $

= $ \mathrm{kg} \quad $ $ \times \quad $ (299,792,458 $ \mathrm{m/s} $)²

= $ \mathrm{J} \, (\mathrm{joules}) $

= $ \mathrm{J} \, (\mathrm{joules}) $ (to significant figures)

$ m $

= $ \displaystyle{\frac{E}{c^2}} $

= $ \mathrm{J} \quad $ $ \div \quad $ (299,792,458 $ \mathrm{m/s} $)²

= $ \mathrm{kg} \quad $

= $ \mathrm{kg} \quad $ (to significant figures)

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