Kilowatt-hour to KilojouleConverter
Instantly convert Kilowatt-hour (kWh) to Kilojoule (kJ). Free, accurate, and easy to use.
How to Convert Kilowatt-hour to Kilojoule
To convert Kilowatt-hour (kWh) to Kilojoule (kJ), multiply your value by 3600.
Example: 5 kWh × 3600 = 18000 kJ
What is a Kilowatt-hour?
The kilowatt-hour (kWh) is the energy consumed by a device drawing 1,000 watts for one continuous hour, equal to exactly 3,600,000 Joules (3.6 MJ). It is the universal billing unit for household and commercial electricity consumption. The average US household uses about 10,500 kWh per year. A 100-watt incandescent light bulb running for 10 hours consumes exactly 1 kWh.
What is a Kilojoule?
The kilojoule equals 1,000 Joules and is used on food nutrition labels in many countries — particularly in Europe, Australia, and Canada — as an alternative to calories. One kilocalorie (food Calorie) equals 4.184 kilojoules. A typical adult requires approximately 8,000–10,000 kJ of dietary energy per day. Running at moderate pace for one hour burns roughly 2,000–3,000 kJ.
Kilowatt-hour to Kilojoule Conversion Table
| Kilowatt-hour (kWh) | Kilojoule (kJ) |
|---|---|
| 0.001 kWh | 3.6 kJ |
| 0.01 kWh | 36 kJ |
| 0.1 kWh | 360 kJ |
| 0.5 kWh | 1800 kJ |
| 1 kWh | 3600 kJ |
| 2 kWh | 7200 kJ |
| 5 kWh | 18000 kJ |
| 10 kWh | 36000 kJ |
| 20 kWh | 72000 kJ |
| 50 kWh | 180000 kJ |
| 100 kWh | 360000 kJ |
| 200 kWh | 720000 kJ |
| 500 kWh | 1800000 kJ |
| 1000 kWh | 3600000 kJ |
| 5000 kWh | 18000000 kJ |
| 10000 kWh | 36000000 kJ |
| 50000 kWh | 180000000 kJ |
| 100000 kWh | 360000000 kJ |
| 1000000 kWh | 3.6000e+9 kJ |
| 1000000000 kWh | 3.6000e+12 kJ |
Frequently Asked Questions
How do I convert Kilowatt-hour to Kilojoule?
Multiply the Kilowatt-hour value by 3600. Formula: kJ = kWh × 3600. Example: 10 kWh = 36000 kJ.
How many Kilojoule are in one Kilowatt-hour?
One Kilowatt-hour (kWh) equals 3600 Kilojoule (kJ).
How many Kilowatt-hour are in one Kilojoule?
One Kilojoule (kJ) equals 0.00027778 Kilowatt-hour (kWh).
What is the exact conversion factor from Kilowatt-hour to Kilojoule?
The conversion factor is 3600. Multiply any kWh value by this number to get kJ. For the reverse, multiply by 0.00027778.
How do I convert Kilojoule back to Kilowatt-hour?
Divide by 3600, or equivalently multiply by 0.00027778. Formula: kWh = kJ ÷ 3600.
Is the Kilowatt-hour-to-Kilojoule conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 3600 is exact and universally agreed upon.