E = mc² (Mass–Energy) Calculator
Turn mass into its equivalent energy with E = mc², or find the mass equivalent of an energy.
Energy
8.98755 × 10¹³ J
- Energy (kWh)
- 24,965,422 kWh
- Energy (MeV)
- 5.60959 × 10²⁶ MeV
- Energy (tons of TNT)
- 21,480.8 tons of TNT
- Energy (kilotons of TNT)
- 21.4808 kilotons of TNT
Show the work
Mass in kg
kg = g × 0.001
1 × 0.001 = 0.001 kg
Energy = mass × c to the power of 2
E = m × c to the power of 2
0.001 × 299,792,458 to the power of 2 = 8.98755 × 10¹³ J
How it works
E = mc², with c = 299,792,458 m/s (exact)
Questions
- How does the e = mc² (mass–energy) calculator work?
- E = mc², with c = 299,792,458 m/s (exact).
- What do I need to enter?
- Solve for, Mass, Mass unit, Energy, Energy unit. Optional fields can be left blank.
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