Electronvolt to Joule Converter
1 electronvolt is exactly 1.602176634e-19 joules. Convert electronvolts (eV) to joules (J) below: type a value and the result updates as you type.
eV to J calculator
Result
Electronvolt to Joule conversion
1 eV = 1.602176634e-19 Jone electronvolt in joules
1 J ≈ 6.241509074e+18 eVone joule in electronvolts
Electronvolt (eV): Exactly 1.602176634e-19 joules (elementary charge × one volt).
Joule (J): SI derived unit: one newton-meter.
Source:SI Brochure, 9th edition (BIPM, 2019)
How to convert electronvolts to joules
To convert electronvolts to joules, multiply the number of electronvolts by 1.602176634e-19.
Formula
J = eV × 1.602176634e-19
Examples
- 5 eV = 5 × 1.602176634e-19 = 8.01088317e-19 J
- 25 eV = 25 × 1.602176634e-19 = 4.005441585e-18 J
- 100 eV = 100 × 1.602176634e-19 = 1.602176634e-17 J
Electronvolt to Joule conversion table
| Electronvolt (eV) | Joule (J) |
|---|---|
| 0.1 eV | 1.602176634e-20 J |
| 0.5 eV | 8.01088317e-20 J |
| 1 eV | 1.602176634e-19 J |
| 2 eV | 3.204353268e-19 J |
| 3 eV | 4.806529902e-19 J |
| 5 eV | 8.01088317e-19 J |
| 10 eV | 1.602176634e-18 J |
| 20 eV | 3.204353268e-18 J |
| 25 eV | 4.005441585e-18 J |
| 50 eV | 8.01088317e-18 J |
| 100 eV | 1.602176634e-17 J |
| 250 eV | 4.005441585e-17 J |
| 500 eV | 8.01088317e-17 J |
| 1000 eV | 1.602176634e-16 J |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many joules are in one electronvolt?
- One electronvolt is exactly 1.602176634e-19 joules.
- How do I convert joules to electronvolts?
- To convert joules to electronvolts, divide the number of joules by 1.602176634e-19. The formula is eV = J ÷ 1.602176634e-19.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 1.602176634e-19 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a electronvolt or a joule?
- A joule is about 6.241509074e+18 times larger than a electronvolt. In other words, a electronvolt is 1.602176634e-19 of a joule.