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Convert electronvolts to joules

Convert electronvolts (eV) to joules (J). 1 eV = 1.60218 × 10⁻¹⁹ J, and 1 J = 6.24151 × 10¹⁸ eV.

1 eV = 1.60218 × 10⁻¹⁹ J

Electronvolts to Joules formula

J = eV × 1.602176634 × 10⁻¹⁹

Multiply the number of electronvolts by 1.602176634 × 10⁻¹⁹.

Example: To convert 1 eV to joules: 1 × 1.602176634 × 10⁻¹⁹ = 1.60218 × 10⁻¹⁹ J.

Quick answers

What is 1 eV in joules?
1 eV = 1.60218 × 10⁻¹⁹ J
What is 1,000,000 eV in joules?
1,000,000 eV = 1.60218 × 10⁻¹³ J

Electronvolts to Joules conversion table

Joules to Electronvolts table
electronvolts (eV)joules (J)
1 eV1.60218 × 10⁻¹⁹ J
10 eV1.60218 × 10⁻¹⁸ J
100 eV1.60218 × 10⁻¹⁷ J
1,000 eV1.60218 × 10⁻¹⁶ J
1,000,000 eV1.60218 × 10⁻¹³ J
1,000,000,000 eV1.60218 × 10⁻¹⁰ J

Frequently asked questions

How many electronvolts are in a joule?

There are 6.24151 × 10¹⁸ electronvolts in a joule (1 J = 6.24151 × 10¹⁸ eV), so 1 eV = 1.60218 × 10⁻¹⁹ J.

How do I convert electronvolts to joules?

Multiply the number of electronvolts by 1.602176634 × 10⁻¹⁹. To convert 1 eV to joules: 1 × 1.602176634 × 10⁻¹⁹ = 1.60218 × 10⁻¹⁹ J.

Is the Electronvolts to Joules conversion exact?

Yes. Both units are defined exactly, so 1 electronvolt is exactly 1.602176634 × 10⁻¹⁹ joules. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 1 eV in joules?

1 eV = 1.60218 × 10⁻¹⁹ J.

How do I convert joules back to electronvolts?

Use the reverse relationship: 1 J = 6.24151 × 10¹⁸ eV. The Joules to Electronvolts page has a converter and a full table.

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