Megajoules (MJ) to Electronvolts (eV) Conversion
Megajoules
The megajoule (MJ) is a unit of energy equal to exactly 1,000,000 joules (10⁶ J). It is used in energy policy, engineering, and physics for large-scale energy quantities. One kilowatt-hour (kWh) equals exactly 3.6 MJ — the conversion fundamental to understanding electricity bills. A litre of petrol contains approximately 34 MJ of chemical energy. The explosive yield of conventional explosives is sometimes expressed in megajoules.
Electronvolts
The electronvolt (eV) is a unit of energy equal to exactly 1.602176634 × 10⁻¹⁹ joules, defined as the kinetic energy gained by a single electron accelerated through a potential difference of one volt. It is the standard unit in particle physics, atomic physics, and solid-state physics. Visible light photons carry 1.8–3.1 eV of energy; X-ray photons carry 100 eV to 100 keV; the proton beams at CERN's LHC reach 6.5 teraelectronvolts (TeV).
| Megajoules (MJ) | Electronvolts (eV) |
|---|---|
| 0.1 MJ | 6.2415090744608E+23 eV |
| 1 MJ | 6.2415090744608E+24 eV |
| 2 MJ | 1.2483018148922E+25 eV |
| 3 MJ | 1.8724527223382E+25 eV |
| 5 MJ | 3.1207545372304E+25 eV |
| 10 MJ | 6.2415090744608E+25 eV |
| 20 MJ | 1.2483018148922E+26 eV |
| 30 MJ | 1.8724527223382E+26 eV |
| 50 MJ | 3.1207545372304E+26 eV |
| 100 MJ | 6.2415090744608E+26 eV |
| 1000 MJ | 6.2415090744608E+27 eV |
Frequently Asked Questions (FAQ)
How many electronvolts are in 1 megajoules?
1 megajoules (MJ) is exactly 6,241,509,074,460,762,785,710,080 electronvolts (eV).
How do I convert megajoules to electronvolts?
Multiply the value in megajoules by 6,241,509,074,460,762,785,710,080 to get the result in electronvolts. Or use the converter above — type any number and see the result instantly.