Step-by-step instructions
- Enter or select Useful work output.
- Enter or select Heat input.
- Tap Calculate.
- Review the result shown directly below the calculator.
Thermal Efficiency Calculator
Calculate useful work as a percentage of heat input.
How to use the Thermal Efficiency Calculator
Calculate useful work as a percentage of heat input.
What the inputs mean
- Useful work output
- Enter the value requested by this field label.
- Heat input
- Enter the value requested by this field label.
Formula or calculation method
Useful work output is divided by Heat input and the result is multiplied by 100 to express the relationship as a percentage.
Example
For example, if Useful work output is 25 and Heat input is 100, the calculated result is 25%.
How to understand the result
The result is a percentage. A higher or lower percentage has different meaning depending on the calculator, so compare it with the goal, limit, benchmark, or historical value relevant to your situation.
Tip: Keep all values in compatible units and use values from the same time period when the calculator compares two amounts.