About the Frequency Calculator
Frequency from period or from wave speed and wavelength — in hertz, with the period in seconds.
Also known as: frequency formula, f = 1/t, hz calculator, period to frequency.
How to use this calculator
- Enter solve for.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
f = 1 / T
Worked example
Using the values pre-filled in the calculator above:
- Solve for: Frequency
- Period = 0.02 s
the calculator returns:
- Frequency: 50 Hz
- Period: 0.02 s