Kilojoule to Kilowatt-hourConverter
Instantly convert Kilojoule (kJ) to Kilowatt-hour (kWh). Free, accurate, and easy to use.
How to Convert Kilojoule to Kilowatt-hour
To convert Kilojoule (kJ) to Kilowatt-hour (kWh), multiply your value by 0.00027778.
Example: 5 kJ × 0.00027778 = 0.00138889 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.
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.
Kilojoule to Kilowatt-hour Conversion Table
| Kilojoule (kJ) | Kilowatt-hour (kWh) |
|---|---|
| 0.001 kJ | 2.7778e-7 kWh |
| 0.01 kJ | 0.00000278 kWh |
| 0.1 kJ | 0.00002778 kWh |
| 0.5 kJ | 0.00013889 kWh |
| 1 kJ | 0.00027778 kWh |
| 2 kJ | 0.00055556 kWh |
| 5 kJ | 0.00138889 kWh |
| 10 kJ | 0.00277778 kWh |
| 20 kJ | 0.00555556 kWh |
| 50 kJ | 0.01388889 kWh |
| 100 kJ | 0.02777778 kWh |
| 200 kJ | 0.05555556 kWh |
| 500 kJ | 0.13888889 kWh |
| 1000 kJ | 0.27777778 kWh |
| 5000 kJ | 1.38888889 kWh |
| 10000 kJ | 2.77777778 kWh |
| 50000 kJ | 13.88888889 kWh |
| 100000 kJ | 27.77777778 kWh |
| 1000000 kJ | 277.77777778 kWh |
| 1000000000 kJ | 277777.77777778 kWh |
Frequently Asked Questions
How do I convert Kilojoule to Kilowatt-hour?
Multiply the Kilojoule value by 0.00027778. Formula: kWh = kJ × 0.00027778. Example: 10 kJ = 0.00277778 kWh.
How many Kilowatt-hour are in one Kilojoule?
One Kilojoule (kJ) equals 0.00027778 Kilowatt-hour (kWh).
How many Kilojoule are in one Kilowatt-hour?
One Kilowatt-hour (kWh) equals 3600 Kilojoule (kJ).
What is the exact conversion factor from Kilojoule to Kilowatt-hour?
The conversion factor is 0.00027778. Multiply any kJ value by this number to get kWh. For the reverse, multiply by 3600.
How do I convert Kilowatt-hour back to Kilojoule?
Divide by 0.00027778, or equivalently multiply by 3600. Formula: kJ = kWh ÷ 0.00027778.
Is the Kilojoule-to-Kilowatt-hour conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 0.00027778 is exact and universally agreed upon.