Kilowatt-Hours and Megajoules Converter
Convert energy between kWh and MJ.
Kilowatt-Hours and Megajoules Converter measurements
Enter your values, then calculate.
Result
—
Enter your measurements above to calculate.
CategoryConversion
Inputs1
CalculationIn browser
How to calculate kilowatt-hours and megajoules converter
Convert electricity and thermal-energy quantities between kilowatt-hours and megajoules.
How the calculation works
A watt is a joule per second, and one hour contains 3,600 seconds, so one kWh equals 3.6 MJ.
Example
Ten kWh equals 36 MJ; 18 MJ equals 5 kWh.
Frequently asked questions
Can this convert utility electricity usage?
Yes. Electricity billed in kWh can be converted directly to MJ using the 3.6 factor.
Quick Insight
Kilowatt-Hours and Megajoules Converter
A watt is a joule per second, and one hour contains 3,600 seconds, so one kWh equals 3.6 MJ.
Powered by SCT Smart Guide™
Let's understand your kilowatt-hours and megajoules converter result.
Your personalized explanation
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Kilowatt-Hours and Megajoules Converter
- Do not confuse kW, a power rate, with kWh, an energy quantity.
- Use total energy consumed over the period.
Common Kilowatt-Hours and Megajoules Converter Mistakes to Avoid
- Converting a kilowatt demand directly to megajoules is impossible without a time duration.
When to Use This Calculator
Convert electricity and thermal-energy quantities between kilowatt-hours and megajoules.
Content reviewed: August 2026 · Robert Threadgill