Enter the work output and the total heat input of a heat engine into the calculator to determine the thermal efficiency.

## Thermal Efficiency Formula

The following formula is used to calculate the thermal efficiency.

*η _{th}* = W / Q

- Where
is the thermal efficiency*η*_{th} - W is the work output (J)
- Q is the heat input (J)

## FAQ

**What is thermal efficiency?**

Thermal efficiency is the rate or efficiency at which a heat engine converts heat into to work.

**Can something be 100% thermal efficient?**

No, in reality, heat engines will always have some losses associated with them.

## Thermal Efficiency Example

How to calculate thermal efficiency?

**First, determine the input heat.**Measure the total heat put into the engine. For this example we will say this is 10 J of heat.

**Next, determine the workout output.**Measure the total work produced by the engine. For this example the work is 9 J.

**Finally, calculate the thermal efficiency.**Using the formula we find the thermal efficiency to be 9/10 = .90 = 90%

## Related Terms

thermal efficiency calculator |

thermal efficiency formula |

how to calculate thermal efficiency |

thermal efficiency |

thermal efficiency equation |

thermal efficiency of rankine cycle |

thermal efficiency of engine |

thermal efficiency meaning |

how to calculate thermal efficiency of an engine |

thermal efficiency of ic engine formula |

how to find thermal efficiency |

thermal efficiency of coal power plant |

thermal efficiency of nuclear power plant |

high thermal efficiency |

efficiency of heat engine equation |

thermal efficiency of a rankine cycle |

thermal efficiency of gas turbine formula |

thermal efficiency thermodynamics |

efficiency of thermal power plant formula |

how to calculate efficiency of heat engine |

engine thermal efficiency formula |

explain thermal efficiency |

net thermal efficiency |

calculate the maximum possible efficiency of a heat engine |