---
title: "Kilojoules to British thermal units — kJ to BTU converter"
description: "1 kilojoule = 0.94782 British thermal units. Conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/kilojoules-to-btu/
site: "At One Place"
---

# Kilojoules to British thermal units

**1 kilojoule in British thermal units: 1 kJ = 0.94782 BTU**

BTU = kJ × 0.9478171203

To convert kilojoules to British thermal units, multiply by 0.9478171203. The table below gives the values people look up most often, and the converter works for any number.

## Kilojoules to British thermal units table

*Common kilojoule values converted to British thermal units.*

| Kilojoules | British thermal units |
| --- | --- |
| 1 kJ | 0.94782 |
| 2 kJ | 1.895634 |
| 3 kJ | 2.843451 |
| 4 kJ | 3.791268 |
| 5 kJ | 4.739086 |
| 10 kJ | 9.478171 |
| 15 kJ | 14.21726 |
| 20 kJ | 18.95634 |
| 25 kJ | 23.69543 |
| 30 kJ | 28.43451 |
| 40 kJ | 37.91268 |
| 50 kJ | 47.39086 |
| 75 kJ | 71.08628 |
| 100 kJ | 94.78171 |
| 250 kJ | 236.9543 |
| 500 kJ | 473.9086 |
| 1,000 kJ | 947.8171 |

## How the conversion works

The relationship is BTU = kJ × 0.9478171203. Both units measure energy, so the conversion is a fixed factor that never changes.

## Common questions

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

One kilojoule equals 0.94782 British thermal units. BTU = kJ × 0.9478171203.

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

Use BTU = kJ × 0.9478171203. So 10 kJ is 9.478171 BTU.

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

One British thermal unit equals 1.055056 kilojoules, which is the reverse of the conversion above.

## Related pages

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