Set a mass and choose what fraction of it is actually converted. The lab computes E = f · m · c² and shows the result in joules, in tonnes of TNT, and against things you already have a feel for.
Energy released E = f · m · c²
8.99 × 1013 J
21.48 kt of TNT
Mass1.0 g
Fraction converted100%
Equivalent to
about 1.4 times the Hiroshima bomb
enough to run 7,133 homes for a year
Speed of light c = 299,792,458 m/s
so c² = 8.98755 × 1016 m²/s²
Energy scale on the canvas is logarithmic — each step is 10 times the one before.
Tip: leave the mass at 1 g and tap Fission, then Annihilation. Same gram of matter, a thousand times the energy.