kWh to MJ Converter - Kilowatt-hour to Megajoule
Kilowatt-hour (kWh) to Megajoule (MJ)
Direct answer
1 kWh = 3.6 MJ
MJ = kWh × 3.6
Converter
Conversion formula
MJ = kWh × 3.6
kWh = MJ × 0.277777777778
Example: 10 kWh = 10 × 3.6 = 36 MJ.
Common conversion table
| kWh | MJ |
|---|---|
| 1 kWh | 3.6 MJ |
| 2 kWh | 7.2 MJ |
| 5 kWh | 18 MJ |
| 10 kWh | 36 MJ |
| 20 kWh | 72 MJ |
| 50 kWh | 180 MJ |
| 100 kWh | 360 MJ |
| 1,000 kWh | 3,600 MJ |
Conversion derivation
Express both kWh and MJ in the same base unit J (joule), then cancel the shared base unit.
- 1
Rewrite kWh in the base unit
- 2
Rewrite MJ in the base unit
- 3
Forward conversion
- 4
Reverse conversion
AI explanation for this conversion
This pre-generated explanation is schema-checked. Numeric results still come from the page formula and calculator.
Explanation for the kWh to MJ conversion factor
The conversion factor of 3.6 arises because both kilowatt-hours and megajoules are units of energy defined in terms of the joule. A kilowatt-hour equals 3,600,000 joules, and a megajoule equals 1,000,000 joules.
Definition
A kilowatt-hour (kWh) is a unit of energy equal to the energy consumed by a 1-kilowatt device operating for one hour. A megajoule (MJ) is a unit of energy equal to one million joules.
Principle
The conversion is performed by expressing both energy units in the common base unit of joules and then dividing the appropriate values to find the ratio between them.
Assumptions
- The conversion is based on the standard definitions of the kilowatt-hour and the joule.
- The definitions assume one kilowatt is exactly 1,000 watts and one hour is exactly 3,600 seconds.
Cautions
- The provided conversion factor is exact based on the unit definitions. Any rounding should be applied only to the final result of a calculation.
- This explanation does not perform or verify any specific conversion calculation.
FAQ
How many MJ are in 1 kWh?
1 kWh = 3.6 MJ.
How many MJ are in 10 kWh?
10 kWh = 36 MJ.
How many MJ are in 100 kWh?
100 kWh = 360 MJ.
What is the formula to convert kWh to MJ?
Use MJ = kWh × 3.6.
How many kWh are in 1 MJ?
1 MJ = 0.277777777778 kWh.
What should I check when converting kWh to MJ?
Use the conversion factor and round the result to the precision required by your calculation.