Kilojoules to Electronvolts Converter
Enter the energy in kilojoules below to convert it to electronvolts.
Convert Kilojoules to Electronvolts
Enter a value in kilojoules (kJ) to convert to electronvolts (eV).
Kilojoule to Electronvolt Conversion Table
Table showing various kilojoule measurements converted to electronvolts. Click any preset value or arrow to load it into the converter.
| Kilojoules (kJ) | Electronvolts (eV) |
|---|---|
| 0.0000001 kJ | 6.241509e+14 eV |
| 0.0000002 kJ | 1.248302e+15 eV |
| 0.0000003 kJ | 1.872453e+15 eV |
| 0.0000004 kJ | 2.496604e+15 eV |
| 0.0000005 kJ | 3.120755e+15 eV |
| 0.0000006 kJ | 3.744905e+15 eV |
| 0.0000007 kJ | 4.369056e+15 eV |
| 0.0000008 kJ | 4.993207e+15 eV |
| 0.0000009 kJ | 5.617358e+15 eV |
| 0.00000001 kJ | 6.241509e+13 eV |
How to Convert Kilojoules to Electronvolts
To convert kilojoules to electronvolts, multiply the energy by the following conversion ratio: 6.241509e+21 electronvolts/kilojoule.
Since one kilojoule is equal to 6.241509e+21 electronvolts, you can use this simple formula to convert:
The energy in electronvolts is equal to the energy in kilojoules multiplied by 6.241509e+21.
For example, here's how to convert 5 kilojoules to electronvolts using the formula above.
How Many Electronvolts Are in a Kilojoule?
There are 6.241509e+21 electronvolts in a kilojoule, which is why we use this value in the formula above.
Our kilojoule to electronvolt calculator automatically converts your energy measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Kilojoules and electronvolts are both units used to measure energy. Keep reading to learn more about each unit.
What Is a Kilojoule?
A kilojoule is a unit of energy equal to 1,000 joules (J), the base unit for energy. Equal to 1,000 Joules. [1]
The kilojoule is classified as a metric and SI-compatible unit of energy. Kilojoules can be abbreviated as kJ; for example, 1 kilojoule can be written as 1 kJ.
In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilojoule (kJ) a convenient decimal multiple of the joule (J).
In practice, kilojoules (kJ) are widely used across large-scale industrial, bulk, and macro-level energy specifications within SI metric workflows, engineering documentation, and technical data sheets.
What Is an Electronvolt?
An electronvolt is a unit of energy equal to 1/6,241,509,074,460,763,000 of a joule (1.602177e-19 J). Atomic energy unit equal to 1.602176634×10⁻¹⁹ Joules. [2]
The electronvolt is classified as an International System of Units (SI) unit of energy. Electronvolts can be abbreviated as eV; for example, 1 electronvolt can be written as 1 eV.
When working with electronvolts (eV) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, electronvolts (eV) are widely used across fine-tolerance laboratory, analytical, and micro-scale energy measurements within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting energy between kilojoules (kJ) and electronvolts (eV), keep full floating-point precision (1 kJ = 6.241509e+21 eV; 1 eV = 1.602177e-22 kJ) during intermediate calculations and round only the final electronvolt figure to match your instrument tolerance.
More Kilojoule & Electronvolt Conversions
Need to calculate in the opposite direction? Use our electronvolts to kilojoules calculator to switch your starting unit immediately. You can also explore related tools such as converting electronvolts to kilojoules, converting kilojoules to joules, or converting kilojoules to kilocalories.
Convert from Kilojoules
Frequently Asked Questions
References
- [1]NIST CODATA StandardNIST CODATA (CODATA Energy & Thermodynamic Constants)·Energy Metrology Standard — Kilojoules (kJ) to Electronvolts (eV)
- [2]NIST SP 811 SpecificationNIST SP 811 (NIST SP 811 App. B.9 (Energy, Work & Heat))·Unit Specifications: Kilojoule (kJ) & Electronvolt (eV)
- [3]BIPM ReferenceBIPM (Derived SI Unit: Joule (J))·Conversion Factors & Mathematical Basis (kJ to eV)