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Electronvolts to Joules Converter

eV → J: type a value and the result appears instantly.

1 eV = 1.602176634 × 10^-19 J
1 J = 6.241509074 × 10^18 eV
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How to convert electronvolts to joules

Use this formula:

J = eV × 1.602176634 × 10^-19

Examples

eV to J conversion chart

electronvolts (eV)joules (J)
0.1 eV1.60218 × 10^-20 J
0.25 eV4.00544 × 10^-20 J
0.5 eV8.01088 × 10^-20 J
1 eV1.60218 × 10^-19 J
2 eV3.20435 × 10^-19 J
3 eV4.80653 × 10^-19 J
4 eV6.40871 × 10^-19 J
5 eV8.01088 × 10^-19 J
6 eV9.61306 × 10^-19 J
7 eV1.12152 × 10^-18 J
8 eV1.28174 × 10^-18 J
9 eV1.44196 × 10^-18 J
10 eV1.60218 × 10^-18 J
12 eV1.92261 × 10^-18 J
15 eV2.40326 × 10^-18 J
20 eV3.20435 × 10^-18 J
25 eV4.00544 × 10^-18 J
30 eV4.80653 × 10^-18 J
40 eV6.40871 × 10^-18 J
50 eV8.01088 × 10^-18 J
60 eV9.61306 × 10^-18 J
70 eV1.12152 × 10^-17 J
75 eV1.20163 × 10^-17 J
80 eV1.28174 × 10^-17 J
90 eV1.44196 × 10^-17 J
100 eV1.60218 × 10^-17 J
150 eV2.40326 × 10^-17 J
200 eV3.20435 × 10^-17 J
250 eV4.00544 × 10^-17 J
500 eV8.01088 × 10^-17 J
1,000 eV1.60218 × 10^-16 J

About the units

Electronvolt (eV) is a commonly used unit. 1 eV = 1.602176634 × 10^-19 J.

Joule (J) is a metric (SI) unit. 1 J = 0.2390057361 cal.

Frequently asked questions

How do I convert electronvolts to joules?
Multiply the value in eV by 1.602176634 × 10^-19.
How many joules are in 1 electronvolt?
1 eV = 1.602176634 × 10^-19 J.
What is 12 eV in J?
12 eV = 1.92261 × 10^-18 J.
How do I convert joules to electronvolts?
Use the reverse converter: J → eV.

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Sources: NIST SP 811 · BIPM SI Brochure · NIST Handbook 44. Last reviewed: 2026-10 · FreeUnitConverters