ENERGY CONVERSION
Kilowatt-hour to Kilojoule.
Convert kilowatt-hour (kWh) to kilojoule (kJ), with the math explained.
THE MATH, MADE SIMPLE
How to convert kilowatt-hour to kilojoule
Multiply your kilowatt-hour value by 3,600 to get the equivalent in kilojoule. Both units are normalized through the joule.
kJ = kWh × 3,60010 kWh = 36,000 kJ
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.QUICK REFERENCE
kWh to kJ conversion table
| Kilowatt-hour (kWh) | Kilojoule (kJ) |
|---|---|
| 1 kWh | 3,600 kJ |
| 2 kWh | 7,200 kJ |
| 5 kWh | 18,000 kJ |
| 10 kWh | 36,000 kJ |
| 20 kWh | 72,000 kJ |
| 50 kWh | 180,000 kJ |
| 100 kWh | 360,000 kJ |
| 500 kWh | 1,800,000 kJ |
| 1,000 kWh | 3,600,000 kJ |
About the kilowatt-hour
The kilowatt-hour (kWh) is a unit of energy. One kilowatt-hour equals 3,600,000 joule (base unit) in this calculator.
All kilowatt-hour conversionsAbout the kilojoule
The kilojoule (kJ) is a unit of energy. One kilojoule equals 1,000 joule (base unit) in this calculator.
All kilojoule conversionsCommon questions
What is 1 kWh in kJ?
One kilowatt-hour equals 3,600 kJ. Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
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