---
title: "Electronvolts to British thermal units — eV to BTU converter"
description: "1 electronvolt = 1.519 × 10^-22 British thermal units. Conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/electronvolts-to-btu/
site: "At One Place"
---

# Electronvolts to British thermal units

**1 electronvolt in British thermal units: 1 eV = 1.519 × 10^-22 BTU**

BTU = eV × 1.518570443 × 10^-22

To convert electronvolts to British thermal units, multiply by 1.518570443 × 10^-22. The table below gives the values people look up most often, and the converter works for any number.

## Electronvolts to British thermal units table

*Common electronvolt values converted to British thermal units.*

| Electronvolts | British thermal units |
| --- | --- |
| 1 eV | 1.519 × 10^-22 |
| 2 eV | 3.037 × 10^-22 |
| 3 eV | 4.556 × 10^-22 |
| 4 eV | 6.074 × 10^-22 |
| 5 eV | 7.593 × 10^-22 |
| 10 eV | 1.519 × 10^-21 |
| 15 eV | 2.278 × 10^-21 |
| 20 eV | 3.037 × 10^-21 |
| 25 eV | 3.796 × 10^-21 |
| 30 eV | 4.556 × 10^-21 |
| 40 eV | 6.074 × 10^-21 |
| 50 eV | 7.593 × 10^-21 |
| 75 eV | 1.139 × 10^-20 |
| 100 eV | 1.519 × 10^-20 |
| 250 eV | 3.796 × 10^-20 |
| 500 eV | 7.593 × 10^-20 |
| 1,000 eV | 1.519 × 10^-19 |

## How the conversion works

The relationship is BTU = eV × 1.518570443 × 10^-22. Both units measure energy, so the conversion is a fixed factor that never changes.

## Common questions

### How many British thermal units are in one electronvolt?

One electronvolt equals 1.519 × 10^-22 British thermal units. BTU = eV × 1.518570443 × 10^-22.

### How do you convert electronvolts to British thermal units?

Use BTU = eV × 1.518570443 × 10^-22. So 10 eV is 1.519 × 10^-21 BTU.

### How many electronvolts are in one British thermal unit?

One British thermal unit equals 6.5851407 × 10^21 electronvolts, which is the reverse of the conversion above.

## Related pages

- [British thermal units to Electronvolts](https://atoneplace.net/convert/btu-to-electronvolts/)
- [Electronvolts to Joules](https://atoneplace.net/convert/electronvolts-to-joules/)
- [Electronvolts to Kilojoules](https://atoneplace.net/convert/electronvolts-to-kilojoules/)
- [Electronvolts to Kilocalories](https://atoneplace.net/convert/electronvolts-to-kcal/)
- [Electronvolts to Watt-hours](https://atoneplace.net/convert/electronvolts-to-watt-hours/)
- [Electronvolts to Kilowatt-hours](https://atoneplace.net/convert/electronvolts-to-kwh/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)