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Power Factor (cos φ)

Calculate Power Factor (cos φ) instantly with the exact formula and a worked example.

Power Factor (cos φ)

P, W
S, VA
cosφ
0.833333
Calculate Power Factor (cos φ) instantly with the exact formula and a worked example.

More about: Power Factor (cos φ)

What it calculates

The “Power Factor (cos φ)” calculator computes cosφ from 2 parameters: p, w, s, va.

A standard physics formula used in educational and engineering tasks.

Example calculation

With parameters P, W = 1,000, S, VA = 1,200 the result is 0.8333.

How to use

  1. Enter p, w and s, va — each field above is adjustable with a slider.
  2. cosφ is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is Power Factor (cos φ) calculated?
The Power Factor (cos φ) calculator computes cosφ from p, w, s, va. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Power Factor (cos φ) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.

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