Kwh to Kj ConverterRight in Your Browser
Convert kilowatt-hours (kWh) to kilojoules (kJ). The kilowatt-hour (kWh) is the unit on electricity bills — one kilowatt of power sustained for one hour. The kilojoule (kJ) is 1,000 joules — the energy unit on food labels in Australia, New Zealand and much of Europe. Everything is calculated locally in your browser — no server, and it works offline.
3600 kJ
in kilojoules (kilojoule)
To convert kilowatt-hours to kilojoules, multiply the kilowatt-hour value by 3600.
Switch to Kj to KwhKwh to Kj Chart
| Kilowatt-hours (kWh) | Kilojoules (kJ) |
|---|---|
| 1 | 3600 |
| 2 | 7200 |
| 3 | 10800 |
| 4 | 14400 |
| 5 | 18000 |
| 10 | 36000 |
| 20 | 72000 |
| 50 | 180000 |
| 100 | 360000 |
Frequently Asked Questions
How many kilojoules are in a kilowatt-hour?
One kilowatt-hour equals 3600 kilojoules (1 kWh = 3600 kJ). So to go from kilowatt-hours to kilojoules, multiply the kilowatt-hour value by 3600.
What is the formula to convert kilowatt-hours to kilojoules?
To convert kilowatt-hours to kilojoules, multiply the kilowatt-hour value by 3600. For example, 10 kWh is 36000 kJ.
What is 30 kilowatt-hours in kilojoules?
30 kilowatt-hours — a typical household's daily electricity use — is 108000 kilojoules. The converter above works for any value, entirely in your browser.
Is the kilowatt-hour to kilojoule conversion exact?
The factor used here is the defined value: 1 kWh = 3600 kJ. Results are rounded to six significant digits for readability, so for high-precision work use the full factor.
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