Online E=mc² calculator: enter a mass to get the equivalent energy, or reverse from energy to mass, for nuclear and relativistic teaching (client-side).
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Mass-energy equivalence | E = mc² | Einstein 1905 |
| Rest energy | E₀ = m₀c² | Relativistic mechanics |
| Total energy | E² = (pc)² + (m₀c²)² | Energy-momentum relation |
| Speed of light | c = 299 792 458 m/s exact | SI definition |
| Nuclear application | Mass defect → binding energy | Nuclear physics |
| Conversion | 1 u·c² = 931.494 MeV | CODATA 2018 |
工作与生活中的相关计算与查询。
质能等价 E=m·c²:质量 m 对应的能量,c≈2.998×10⁸ m/s 为光速。质量即能量的一种形式。
1 kg 质量对应约 9×10¹⁶ J(90 拍焦)。核反应与正反物质湮灭中质量差转化为能量。