Mass to Energy Calculator (E=mc²)
Calculate Einstein's mass-energy equivalence. Convert mass to energy and vice versa.
Equivalent Energy
E=mc² Calculator
Einstein's famous mass-energy equivalence equation: E (energy) = m (mass) × c² (speed of light squared). c = 299,792,458 m/s. c² is huge (8.99 × 10^16), so even tiny mass converts to enormous energy. Foundation of nuclear physics, particle accelerators, stellar evolution.
Tips
- 1 gram ≈ 25 million kWh of energy
- Sun converts 4 million tons mass to energy per SECOND
- Hiroshima bomb: ~1g of mass converted
- Modern hydrogen bomb: ~100g mass converted
- Particle accelerators (LHC) study mass-energy conversion at subatomic level
FAQs
Why is c² so big?
Speed of light is 300 million m/s. Squared, that's 9 × 10^16 m²/s². Multiplying any mass by this huge number = massive energy.
Practical applications?
Nuclear reactors (controlled fission), nuclear bombs (uncontrolled fission), nuclear medicine, particle physics, GPS satellite corrections (general relativity).
Can I create mass from energy?
Yes — in particle accelerators. Photons colliding with enough energy can create electron-positron pairs (E2>= 2m_e·c²).