---
title: "Kilojoules to Kilowatt-hours — kJ to kWh converter"
description: "1 kilojoule = 0.0002778 kilowatt-hours. Convert kilojoules to kilowatt-hours with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/kilojoules-to-kwh/
site: "At One Place"
---

# Kilojoules to kilowatt-hours

**1 kilojoule in kilowatt-hours: 1 kJ = 0.0002778 kWh**

kWh = kJ × 0.000277777778

To convert kilojoules to kilowatt-hours, multiply by 0.000277777778. The table below gives the values people look up most often, and the converter works for any number.

## Kilojoules to kilowatt-hours table

*Common kilojoule values converted to kilowatt-hours.*

| Kilojoules | Kilowatt-hours |
| --- | --- |
| 1 kJ | 0.0002778 |
| 2 kJ | 0.0005556 |
| 3 kJ | 0.0008333 |
| 4 kJ | 0.0011111 |
| 5 kJ | 0.0013889 |
| 10 kJ | 0.0027778 |
| 15 kJ | 0.0041667 |
| 20 kJ | 0.0055556 |
| 25 kJ | 0.0069444 |
| 30 kJ | 0.0083333 |
| 40 kJ | 0.011111 |
| 50 kJ | 0.013889 |
| 75 kJ | 0.020833 |
| 100 kJ | 0.027778 |
| 250 kJ | 0.069444 |
| 500 kJ | 0.13889 |
| 1,000 kJ | 0.27778 |

## How the conversion works

The relationship is kWh = kJ × 0.000277777778. Both units measure energy, so the conversion is a fixed factor that never changes.

## Common questions

### How many kilowatt-hours are in one kilojoule?

One kilojoule equals 0.0002778 kilowatt-hours. kWh = kJ × 0.000277777778.

### How do you convert kilojoules to kilowatt-hours?

Use kWh = kJ × 0.000277777778. So 10 kJ is 0.0027778 kWh.

### How many kilojoules are in one kilowatt-hour?

One kilowatt-hour equals 3,600 kilojoules, which is the reverse of the conversion above.

## Related pages

- [Kilowatt-hours to Kilojoules](https://atoneplace.net/convert/kwh-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 British thermal units](https://atoneplace.net/convert/kilojoules-to-btu/)

## 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/)