Convert Kilowatt-hour to Gigajoule
Input the number of kilowatt-hours you want to convert to gigajoules.
How to Convert Kilowatt-hours to Gigajoules
The kilowatt-hour and gigajoule are both units of energy. 1 gigajoule equals 277.77777778 kilowatt-hours. This means to convert kilowatt-hours to gigajoules, you divide by 277.77777778.
Formula
Step-by-Step Example
Convert 5 kWh to gigajoules:
We need to convert kilowatt-hours to gigajoules
Since 1 GJ = 277.77777778 kWh, divide by 277.77777778
5 ÷ 277.77777778 = 0.018
5 kWh = 0.018 GJ
Kilowatt-hour to Gigajoule Conversion Table
Quick reference table for common kilowatt-hour to gigajoule conversions. Click any value for detailed calculation.
| Kilowatt-hours (kWh) | Gigajoules (GJ) |
|---|---|
| 0.1 kWh | 0.00036 GJ |
| 0.5 kWh | 0.0018 GJ |
| 1 kWh | 0.0036 GJ |
| 2 kWh | 0.0072 GJ |
| 5 kWh | 0.018 GJ |
| 10 kWh | 0.036 GJ |
| 25 kWh | 0.09 GJ |
| 50 kWh | 0.18 GJ |
| 100 kWh | 0.36 GJ |
About These Units
Kilowatt-hour (kWh)
A kilowatt-hour (kWh) is the standard unit for electricity billing, equal to 1,000 watt-hours or 3.6 megajoules. Average US home uses 900 kWh monthly. Running a 100W bulb for 10 hours uses 1 kWh. Electricity costs $0.10-0.30 per kWh typically.
Gigajoule (GJ)
A gigajoule (GJ) equals 1 billion joules or approximately 277.8 kilowatt-hours. Gigajoules measure natural gas billing, industrial energy use, and building energy consumption. One GJ equals about 26.8 cubic meters of natural gas.
Frequently Asked Questions
How do I convert kilowatt-hours to gigajoules?
To convert kilowatt-hours to gigajoules, divide the value by 277.77777778. For example, 10 kWh = 0.036 GJ.
How many gigajoules are in 1 kilowatt-hour?
1 kilowatt-hour equals 0.0036 gigajoules.
What is the formula for kilowatt-hours to gigajoules?
The formula is: GJ = kWh ÷ 277.77777778.