Mass–Energy Equivalence (E = mc²)
Calculate Mass–Energy Equivalence (E = mc²) instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Mass–Energy Equivalence (E = mc²)
Masskg
E = m·c²
89,875,517,900,000J
More about: Mass–Energy Equivalence (E = mc²)
What it calculates
The “Mass–Energy Equivalence (E = mc²)” calculator computes E = m·c² in J from 1 parameter: mass (kg).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Mass = 0.001 kg the result is 89,875,517,900,000 J.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.