megajoules to kilowatt-hours — MJ to kWh Converter

Conversion Formula

Multiply the megajoules value by the conversion factor:
kWh = MJ × 0.2778

How to Convert Step by Step

• Enter the number of megajoules you want to convert (e.g. 10 MJ).
• Multiply it by the factor 0.2778.
• Round the result to 2–4 decimals for practical use — done, that is your value in kilowatt-hours.

Common megajoules to kWh Conversion Table

Real-World Examples

• Megajoules are used for gas, electricity, and fuel energy. Example: 10 MJ ≈ 2.7778 kWh.
• Kilowatt-hours are used for power bills, AC, and EV range. Example: 20 kWh ≈ 72 MJ.
• Megajoules are used for gas, electricity, and fuel energy. Another common case: 50 MJ = 13.8889 kWh.

About megajoules & kilowatt-hours

• megajoules: A megajoule is 1,000 kJ, used for gas and electricity. A liter of petrol contains about 34 MJ.
• kilowatt-hours: The kilowatt-hour ("unit") bills electricity: 1 kWh = 1,000 W for one hour. A HK home uses ~300–600 units monthly.

FAQ

How many kilowatt-hours in 1 MJ?

1 MJ = 0.2778 kWh. Use the converter above to compute any value, or multiply MJ by 0.2778.

Is this megajoules-to-kilowatt-hours converter accurate?

Yes — conversions use the standard international factors and are rounded to 4 decimals.

When is megajoules to kilowatt-hours conversion used?

Megajoules are used for gas, electricity, and fuel energy. Kilowatt-hours are used for power bills, AC, and EV range. Whenever a value is given in MJ but you need kWh, this converter is the quick fix.

Related Conversions

joules→kilojouleskilojoules→jouleskilojoules→megajoulesmegajoules→kilojouleswatt-hours→kilowatt-hourskilowatt-hours→watt-hourskilowatt-hours→megajouleskilocalories→kilojouleskilojoules→kilocalories