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Power Factor (cos φ)

Calculate Power Factor (cos φ) instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.

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. Free online calculator — no signup, works on mobile.

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 the parameter values — every field above is adjustable with a slider.
  2. The result and related metrics are calculated automatically as you type.
  3. Use the additional metrics shown (if any) where needed.
  4. Copy the result or bookmark the page.

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