Convert energy units — joules, kilowatt-hours, calories, BTU, electron volts and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 eV | 1.602e-28 MJ | |
| 0.01 eV | 1.602e-27 MJ | |
| 0.1 eV | 1.602e-26 MJ | |
| 1 eV | 1.602e-25 MJ | |
| 5 eV | 8.010e-25 MJ | |
| 10 eV | 1.602e-24 MJ | |
| 50 eV | 8.010e-24 MJ | |
| 100 eV | 1.602e-23 MJ | |
| 1000 eV | 1.602e-22 MJ |
Formula: Megajoule = Electron Volt × 1.6020e-25
Multiply any electron volt value by 1.6020e-25 to get megajoule.
Reverse: Electron Volt = Megajoule × 6.2422e24
Common electron volt values — factor: 1 eV = 1.6020e-25 MJ
| Electron Volt (eV) | Megajoule (MJ) | Context |
|---|---|---|
| 1 eV | 1.602e-25 MJ | Chemical bond |
| 100 eV | 1.602e-23 MJ | UV photon |
| 1e+04 eV | 1.602e-21 MJ | X-ray photon |
| 1e+06 eV | 1.602e-19 MJ | Gamma ray |
| 1.000e+09 eV | 1.602e-16 MJ | 1 GeV |
| 1.000e+12 eV | 1.602e-13 MJ | 1 TeV |
| 1.000e+15 eV | 1.602e-10 MJ | LHC range |
| 1.000e+18 eV | 1.602e-07 MJ | Ultra-high cosmic ray |
| 1.000e+21 eV | 0.0001602 MJ | Macro scale |
| 1.000e+24 eV | 0.1602 MJ | Millijoule scale |
| 1.000e+27 eV | 160.2 MJ | Joule scale |
| 1.000e+30 eV | 1.602e+05 MJ | kJ scale |
| 1.000e+33 eV | 1.602e+08 MJ | MJ scale |
| 1.000e+36 eV | 1.602e+11 MJ | GJ scale |
| 1.000e+40 eV | 1.602e+15 MJ | Extreme |
1 eV = 1.6020e-25 MJ. Memorize for instant estimates.
Use 1.6020e-25 as a quick mental multiplier.
Multiply result by 6.2422e24 to recover the original eV value.
Works with beam energies, collision products, and mass-energy in eV.
Designs band gap structures — silicon band gap is 1.12 eV.
Selects tube voltage in keV for optimal diagnostic X-ray imaging.
Optimizes solar cell efficiency based on photon energy in eV.
Calculates nuclear binding energies and decay Q-values in MeV.
Measures work function and ionization energy in electron volts.
The electron volt (eV) is the energy gained by a single electron accelerating through a potential difference of one volt, equal to approximately 1.602 × 10⁻¹⁹ joules. It was formally adopted as a unit by the IEC in 1930.
Electron volts are the standard energy unit in atomic physics, particle physics, and semiconductor engineering. Chemical bond energies are a few eV; X-ray photons are kiloelectron volts (keV); particle accelerators measure GeV and TeV.
Interesting fact: The Large Hadron Collider accelerates protons to 6.8 TeV (6.8 × 10¹² eV). Visible light photons have energies of 1.8–3.1 eV. The rest mass energy of an electron is 511 keV.
The megajoule (MJ) equals 1,000,000 joules and is used for large-scale energy measurements in engineering, transportation, and industrial processes.
One liter of petrol contains about 34 MJ of chemical energy. A bolt of lightning releases about 1-5 MJ. An adult's daily food intake is roughly 8-10 MJ. Electric vehicle batteries are typically rated at 40-100 MJ (11-28 kWh).
Interesting fact: The kinetic energy of a 1,000 kg car traveling at 100 km/h is about 0.385 MJ. TNT explosive releases about 4.6 MJ per kilogram when detonated.
Converting electron volt to megajoule is common across energy, nutrition, engineering, and science. Different sectors use different energy units — joules in physics, kcal in nutrition, kWh in electricity, and BTU in HVAC — making accurate conversion essential for cross-disciplinary work and international comparisons.
Quick reference: 5 eV = 8.0100e-25 MJ and 10 eV = 1.6020e-24 MJ. Reverse: 1 MJ = 6.2422e24 eV. Exact factor: 1 eV = 1.6020e-25 MJ.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.