Unit conversions
Energy converter
Explain this equation
Converts energy between joules, kilojoules, megajoules, kWh and Btu. Use it when comparing fuel data, bills and appliance figures.
Value is the energy you enter. Result is the same energy in the unit you pick.
The equation is result = value because the energy is unchanged; only the unit changes. Internally the value goes to joules and then to the chosen unit. 1 kWh is 3.6 MJ because it is 1000 W for 3600 seconds.
Sense check: 1 kWh is 3.6 MJ and about 3412 Btu. A calorific value of 39.5 MJ/m³ is about 11 kWh/m³.
Watch out: energy is an amount, not a rate. Don't mix it up with power units such as kW.
Enter your values to see the result.
Good to know
Choose another compatible output unit beside the answer. UK and US gallons are separate; Btu uses the International Table definition.
Sources
Results are arithmetic only. Worked examples are not recommended design settings. This library does not provide automatic gas pipe selection, live gas tightness tests, purging procedures, combustion acceptance limits, installation approval or commissioning certification. Manufacturer data and the applicable current method remain essential.