Convert energy units — joules, kilowatt-hours, calories, BTU, electron volts and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 eV | 1.602e-25 kJ | |
| 0.01 eV | 1.602e-24 kJ | |
| 0.1 eV | 1.602e-23 kJ | |
| 1 eV | 1.602e-22 kJ | |
| 5 eV | 8.010e-22 kJ | |
| 10 eV | 1.602e-21 kJ | |
| 50 eV | 8.010e-21 kJ | |
| 100 eV | 1.602e-20 kJ | |
| 1000 eV | 1.602e-19 kJ |
Formula: Kilojoule = Electron Volt × 1.6020e-22
Multiply any electron volt value by 1.6020e-22 to get kilojoule.
Reverse: Electron Volt = Kilojoule × 6.2422e21
Common electron volt values — factor: 1 eV = 1.6020e-22 kJ
| Electron Volt (eV) | Kilojoule (kJ) | Context |
|---|---|---|
| 1 eV | 1.602e-22 kJ | Chemical bond |
| 100 eV | 1.602e-20 kJ | UV photon |
| 1e+04 eV | 1.602e-18 kJ | X-ray photon |
| 1e+06 eV | 1.602e-16 kJ | Gamma ray |
| 1.000e+09 eV | 1.602e-13 kJ | 1 GeV |
| 1.000e+12 eV | 1.602e-10 kJ | 1 TeV |
| 1.000e+15 eV | 1.602e-07 kJ | LHC range |
| 1.000e+18 eV | 0.0001602 kJ | Ultra-high cosmic ray |
| 1.000e+21 eV | 0.1602 kJ | Macro scale |
| 1.000e+24 eV | 160.2 kJ | Millijoule scale |
| 1.000e+27 eV | 1.602e+05 kJ | Joule scale |
| 1.000e+30 eV | 1.602e+08 kJ | kJ scale |
| 1.000e+33 eV | 1.602e+11 kJ | MJ scale |
| 1.000e+36 eV | 1.602e+14 kJ | GJ scale |
| 1.000e+40 eV | 1.602e+18 kJ | Extreme |
1 eV = 1.6020e-22 kJ. Memorize for instant estimates.
Use 1.6020e-22 as a quick mental multiplier.
Multiply result by 6.2422e21 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 kilojoule (kJ) equals 1,000 joules and is the practical energy unit for food, chemistry, and heating applications in metric countries. Food energy labels in Australia, Europe, and most of the world use kilojoules.
A dietary calorie (kcal) equals 4.184 kJ. A can of soda contains about 600 kJ. The specific heat of water (4.184 kJ/kg·°C) means heating 1 liter of water by 1°C requires 4.184 kJ.
Interesting fact: An average adult needs about 8,000-10,000 kJ (2,000-2,400 kcal) per day. Running a marathon burns approximately 12,500 kJ.
Converting electron volt to kilojoule 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-22 kJ and 10 eV = 1.6020e-21 kJ. Reverse: 1 kJ = 6.2422e21 eV. Exact factor: 1 eV = 1.6020e-22 kJ.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.