Convert Kilojoule to Electronvolt
Convert kilojoules to electronvolts by entering a value below.
How to Convert Kilojoules to Electronvolts
The kilojoule and electronvolt are both units of energy. By definition, 1 kilojoule equals exactly 6.2415090745e21 electronvolts. This means to convert kilojoules to electronvolts, you multiply by 6.2415090745e21.
Formula
Step-by-Step Example
Convert 5 kJ to electronvolts:
We need to convert kilojoules to electronvolts
Since 1 kJ = 6.2415090745e21 eV, multiply by 6.2415090745e21
5 × 6.2415090745e21 = 3.1207545372e22
5 kJ = 3.1207545372e22 eV
Kilojoule to Electronvolt Conversion Table
Quick reference table for common kilojoule to electronvolt conversions. Click any value for detailed calculation.
| Kilojoules (kJ) | Electronvolts (eV) |
|---|---|
| 0.1 kJ | 6.2415090745e20 eV |
| 0.5 kJ | 3.1207545372e21 eV |
| 1 kJ | 6.2415090745e21 eV |
| 2 kJ | 1.2483018149e22 eV |
| 5 kJ | 3.1207545372e22 eV |
| 10 kJ | 6.2415090745e22 eV |
| 25 kJ | 1.5603772686e23 eV |
| 50 kJ | 3.1207545372e23 eV |
| 100 kJ | 6.2415090745e23 eV |
About These Units
Kilojoule (kJ)
A kilojoule (kJ) equals 1,000 joules or approximately 239 calories. Kilojoules measure food energy on nutrition labels in Australia, Europe, and many countries. An average adult needs 8,400-10,000 kJ daily. One kJ equals approximately 0.239 kcal.
Electronvolt (eV)
An electronvolt (eV) is the energy gained by an electron accelerated through 1 volt potential difference, equal to 1.602×10⁻¹⁹ joules. Electronvolts measure atomic and molecular energies, photon energy (visible light: 1.6-3.3 eV), and particle physics. X-rays range from 100 eV to 100 keV.
Frequently Asked Questions
How do I convert kilojoules to electronvolts?
To convert kilojoules to electronvolts, multiply the value by 6.2415090745e21. For example, 10 kJ = 6.2415090745e22 eV.
How many electronvolts are in 1 kilojoule?
1 kilojoule equals 6.2415090745e21 electronvolts.
What is the formula for kilojoules to electronvolts?
The formula is: eV = kJ × 6.2415090745e21.