Online Fuel Equivalents Calculator

The calculator below can used to convert between some common fuel energy equivalents:

• Standard reference fuels are statistical units of a defined gross heat content
• Natural gas equivalents assume 1000 Btu/ft³ gross - or 9400 kcal/Nm³ or 39.4 MJ/Nm³ 

Download and print Fuel Energy Equivalents chart

Example - Convert from Btu to Natural gas nm³

The equivalent of 100 Btu energy can be approximated to 0.0025 nm³ of natural gas as indicated in the chart below.

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This page can be cited as

• Engineering ToolBox, (2004). Online Fuel Equivalents Calculator. [online] Available at: https://www.engineeringtoolbox.com/fuels-equivalents-calculator-d_814.html [Accessed Day Mo. Year].

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