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Mass-Energy Calculator

Science & Engineering

E=mc² + TNT equivalent

Quick Answer

Mass-Energy Calculator: E=mc² + TNT equivalent. Mass-Energy Calculator uses standard science & engineering formulas to compute accurate results instantly.

Equivalent energy E = mc²
8.988×10^13 J
= 2.148e+4 tons TNT
Tons of TNT2.148e+4
kWh2.497×10^7
Mass (kg)0.001000

Calculation steps

  1. 1Mass in kg: 0.001000 kg
  2. 2E = m×c² = 0.001000 × (2.998×10⁸)²
  3. 3E = 8.988×10^13 J = 2.148e+4 tons TNT = 2.497×10^7 kWh

Mass-energy reference

MassEnergyScaleNote
1 g9.0×10¹³ J≈2.15 万吨 TNT≈2500 万度电
1 kg9.0×10¹⁶ J≈2150 万吨 TNT≈250 亿度电
1 u（原子质量单位）1.49×10⁻¹⁰ J≈931.5 MeV核物理常用
太阳每秒亏损≈426 万吨→ 3.8×10²⁶ J/s氢聚变成氦
c² ≈ 9×10¹⁶ m²/s² is a colossal conversion factor — 1 g of mass equals ~21.5 kilotons of TNT (Hiroshima scale). Chemical reactions convert only ~1 part in 10¹⁰ of mass, far below measurement; nuclear fission converts ~0.1%, fusion ~0.7%. The Sun burns 4.26 million tons of mass into energy every second.

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  1. Enter known quantities: fill values and confirm units in the Mass-Energy Calculator.
  2. Instant solution: unknowns solve live with the formula shown transparently.
  3. Use constant/material tables: standard physical constants and material data are listed on this page.
  4. Compare conditions: change inputs to compare scenarios.

Key Points

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  • Key capability: E=mc² + TNT equivalent.
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Formula & How It Works

Mass-Energy Calculator formula

Mass-Energy Calculator uses standard science & engineering formulas to compute accurate results instantly.

FAQ

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Source & Updates

Based on CODATA recommended constants and standard physics formulas. Last updated: 2025-07

Last updated:

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