Wave Frequency & Period Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter either a frequency or a period.
- Read the other.
How it works
Frequency and period are reciprocals: f = 1 ÷ T and T = 1 ÷ f.
Worked example
50 Hz. = a period of 0.02 s.
Common mistakes
- Entering both fields — enter just one and the tool finds the other.
- Confusing period (time per cycle) with frequency (cycles per second).
Frequently asked questions
What's the period of mains power?
At 50 Hz it's 0.02 s per cycle; at 60 Hz it's about 0.0167 s.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.