Boiler Efficiency
Calculate Boiler Efficiency instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.
Boiler Efficiency
Useful heat, kW
Fuel energy, kW
η, %
90
More about: Boiler Efficiency
What it calculates
The “Boiler Efficiency” calculator computes η, % from 2 parameters: useful heat, kw, fuel energy, kw.
Applied in business management, unit economics, and financial modeling.
Example calculation
With parameters Useful heat, kW = 90, Fuel energy, kW = 100 the result is 90.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.