How to convert electronvolts to joules
To convert electronvolts (eV) to joules (J), multiply the value in electronvolts by 1.602176634 × 10⁻¹⁹.
J = eV × 1.602176634 × 10⁻¹⁹
Example: 10 eV = 1.602176634 × 10⁻¹⁸ J.
You can also type 10 eV to J into the smart calculator, or mix units: 1 eV + 1 J.
Electronvolts to Joules conversion table
| Electronvolts | Joules |
|---|---|
| 0.01 eV | 1.6021766 × 10⁻²¹ J |
| 0.1 eV | 1.6021766 × 10⁻²⁰ J |
| 0.25 eV | 4.0054416 × 10⁻²⁰ J |
| 0.5 eV | 8.0108832 × 10⁻²⁰ J |
| 1 eV | 1.6021766 × 10⁻¹⁹ J |
| 2 eV | 3.2043533 × 10⁻¹⁹ J |
| 3 eV | 4.8065299 × 10⁻¹⁹ J |
| 4 eV | 6.4087065 × 10⁻¹⁹ J |
| 5 eV | 8.0108832 × 10⁻¹⁹ J |
| 6 eV | 9.6130598 × 10⁻¹⁹ J |
| 7 eV | 1.1215236 × 10⁻¹⁸ J |
| 8 eV | 1.2817413 × 10⁻¹⁸ J |
| 9 eV | 1.441959 × 10⁻¹⁸ J |
| 10 eV | 1.6021766 × 10⁻¹⁸ J |
| 12 eV | 1.922612 × 10⁻¹⁸ J |
| 15 eV | 2.403265 × 10⁻¹⁸ J |
| 20 eV | 3.2043533 × 10⁻¹⁸ J |
| 25 eV | 4.0054416 × 10⁻¹⁸ J |
| 30 eV | 4.8065299 × 10⁻¹⁸ J |
| 40 eV | 6.4087065 × 10⁻¹⁸ J |
| 50 eV | 8.0108832 × 10⁻¹⁸ J |
| 60 eV | 9.6130598 × 10⁻¹⁸ J |
| 75 eV | 1.2016325 × 10⁻¹⁷ J |
| 100 eV | 1.6021766 × 10⁻¹⁷ J |
| 250 eV | 4.0054416 × 10⁻¹⁷ J |
| 500 eV | 8.0108832 × 10⁻¹⁷ J |
| 1,000 eV | 1.6021766 × 10⁻¹⁶ J |
Converting joules back to electronvolts
1 J = 6.241509074 × 10¹⁸ eV. See the Joules to Electronvolts converter, or press the swap button above.
About the units
Electronvolt (eV)
Exactly 1.602176634 × 10⁻¹⁹ joules, used in atomic and particle physics.
Joule (J)
The SI unit of energy: one newton acting over one meter.
Energy is the capacity to do work. The SI unit is the joule. Food energy is labelled in kilocalories (Calories with a capital C) or kilojoules, electricity is billed in kilowatt-hours, and heating often uses BTU or therms.
Questions and answers
How many joules are in a electronvolt?
One electronvolt (eV) equals 1.602176634 × 10⁻¹⁹ joules (J).
How do I convert electronvolts to joules?
To convert electronvolts to joules, multiply the value in electronvolts by 1.602176634 × 10⁻¹⁹. The formula is J = eV × 1.602176634 × 10⁻¹⁹. For example, 10 eV = 1.6021766 × 10⁻¹⁸ J.
What is 10 eV in J?
10 electronvolts is 1.602176634 × 10⁻¹⁸ joules.
Which is bigger, a electronvolt or a joule?
A joule is bigger: 1 J = 6.241509074 × 10¹⁸ eV.
Are Calories on food labels the same as calories?
No. The food Calorie (capital C) is a kilocalorie: 1,000 small calories, or 4.184 kilojoules.
Does this eV to J converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.