Efficiency
Calculate Efficiency instantly with the exact formula and a worked example. Free online calculator — no signup.
Efficiency
Useful work, J
Heat supplied, J
Efficiency
40%
More about: Efficiency
What it calculates
The “Efficiency” calculator computes Efficiency in % from 2 parameters: useful work, j, heat supplied, j.
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Useful work, J = 1,000, Heat supplied, J = 2,500 the result is 40 %.
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.