Convert Kilojoule to Electronvolt
Use this free converter to change kilojoules (kJ) into electronvolts (eV). Kilojoule and electronvolt both measure energy. As a quick reference, 1 kJ equals 6.2415e+21 eV, and 1 eV equals 1.6022e-22 kJ.
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Electronvolt (eV)
6.2415e+21
1 kJ = 6.2415e+21 eV
Energy conversion table
| Kilojoule | Electronvolt |
|---|---|
| 0.01 | 6.2415e+19 |
| 0.1 | 6.2415e+20 |
| 0.5 | 3.1208e+21 |
| 1 | 6.2415e+21 |
| 2 | 1.2483e+22 |
| 3 | 1.8725e+22 |
| 5 | 3.1208e+22 |
| 10 | 6.2415e+22 |
| 20 | 1.2483e+23 |
| 25 | 1.5604e+23 |
| 50 | 3.1208e+23 |
| 100 | 6.2415e+23 |
| 1,000 | 6.2415e+24 |
How to convert Kilojoule to Electronvolt
Multiply the kilojoule value by 6.2415e+21 to get electronvolts.
- Enter the number of kilojoules you want to convert.
- The converter instantly shows the equivalent value in electronvolts.
- Worked example: 15 kJ × 6.2415e+21 = 9.3623e+22 eV.
- Use the swap button to reverse the conversion (electronvolt to kilojoule).
About these units
Kilojoule (kJ)
- Definition
- A kilojoule (kJ) is 1,000 joules, a practical size for food energy and mechanical work.
- History
- It is a metric multiple of the joule.
- Current use
- Kilojoules express food energy on nutrition labels in many countries.
Electronvolt (eV)
- Definition
- An electronvolt (eV) is the energy gained by an electron moving through a one-volt potential, a tiny amount of energy.
- History
- It became standard in atomic and particle physics in the 20th century.
- Current use
- Electronvolts measure energies of particles, photons, and chemical bonds.
Frequently asked questions
How many electronvolts are in a kilojoule?
There are 6.2415e+21 eV in 1 kJ. To convert, multiply the number of kilojoules by 6.2415e+21.
How do I convert kilojoules to electronvolts?
Multiply the kilojoule value by 6.2415e+21 to get electronvolts. For example, 10 kJ = 6.2415e+22 eV.
Is this kilojoule-to-electronvolt converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Kilojoule to other energy units
| Unit | 1 Kilojoule equals |
|---|---|
| Joule (J) | 1000 J |
| Calorie (cal) | 239.00574 cal |
| Kilocalorie (kcal) | 0.23900574 kcal |
| Watt Hour (Wh) | 0.27777778 Wh |
| Kilowatt Hour (kWh) | 0.00027777778 kWh |
| Electronvolt (eV) | 6.2415e+21 eV |
| British Thermal Unit (BTU) | 0.94781712 BTU |
| Foot-Pound (ft·lb) | 737.56215 ft·lb |