Power Converter
Convert a quantity using the listed fixed unit factors.
Open toolPower Factor Calculator
Power factor = real power / apparent power. Nonnegative consumed real power no greater than apparent power.
Free to useNo sign-upRuns in your browser
Enter your details
Enter the inputs, then select Calculate.
Your result
Enter your details
Result will appear here
How Power Factor Calculator works
Power factor = real power / apparent power.
Nonnegative consumed real power no greater than apparent power. Does not distinguish leading and lagging power factor. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
How to use Power Factor Calculator
Follow the labelled inputs.
Enter real power (w)
Replace the example with real power (w). The field labels specify the expected format and units.
Input and settings
Check the remaining inputs
Set apparent power (va). Nonnegative consumed real power no greater than apparent power.
Tool result
Run, review and save
Select Calculate. Review the calculated result, then copy it or download the result text.
Review the details
Examples and uses for Power Factor Calculator
Check the supplied example
The starting example produces 0.8. Power factor = real power / apparent power.
Use your own inputs
Read the labels for real power (w) and apparent power (va). Nonnegative consumed real power no greater than apparent power.
Record a reviewed result
Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.
How to read the result
Read the units and assumptions with the output.
Power factor = real power / apparent power.
Nonnegative consumed real power no greater than apparent power. Does not distinguish leading and lagging power factor. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
Supported input and limits
Check the stated scope before you run it.
Nonnegative consumed real power no greater than apparent power. Does not distinguish leading and lagging power factor. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
The input stays in this browser. Copy result and Download save the same displayed text.
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Open toolPower Factor Calculator: common questions
Answers about using Power Factor Calculator and understanding its results.
What assumptions and input limits apply?
Nonnegative consumed real power no greater than apparent power. Does not distinguish leading and lagging power factor. Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.
How can I save the output?
Use Copy result to copy the displayed text, or Download to save it as a text file. The tool runs in your browser and does not require an account.
Calculate with your input
Check the calculated result, then copy or download it.