Frequency to Period Calculator

Frequency and period are reciprocals of each other — frequency measures how many cycles occur per second, while period measures how long each cycle takes. Select your calculation mode (Period from Frequency or Frequency from Period), then enter a frequency (mHz to GHz) or period (nanoseconds to seconds) to get the converted result, the formula used, and the equivalent cycles per second in Hz. Also try the mAh to Wh Calculator.

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Results

Result

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Formula

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Cycles per Second

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Frequently Asked Questions

What is the relationship between frequency and period?

Frequency and period are reciprocals of each other. The formula is F = 1/T, where F is frequency and T is period. If frequency increases, period decreases proportionally. See also our Volts to Joules Calculator.

How do you convert frequency to period?

To convert frequency to period, use the formula T = 1/F. For example, if frequency is 50 Hz, the period is 1/50 = 0.02 seconds or 20 milliseconds.

What units can I use for frequency calculations?

You can use millihertz (mHz), hertz (Hz), kilohertz (kHz), megahertz (MHz), and gigahertz (GHz) for frequency. For period, use nanoseconds, microseconds, milliseconds, or seconds.

What is a typical frequency for electrical power?

Standard electrical power frequency is 50 Hz in most countries and 60 Hz in North America. This means the period is 20 ms (50 Hz) or 16.67 ms (60 Hz). You might also find our Amps to Volts Calculator useful.

How do I calculate the period of a signal wave?

Measure or identify the frequency of the signal wave, then use T = 1/F. For a 1 kHz signal, the period would be 1/1000 = 0.001 seconds or 1 millisecond.

What is the difference between frequency and angular frequency?

Frequency (f) is measured in Hz and represents cycles per second. Angular frequency (ω) is measured in radians per second and equals 2πf. This calculator works with regular frequency in Hz.

Can I calculate RPM using this frequency calculator?

Yes, RPM (revolutions per minute) can be converted to Hz by dividing by 60. For example, 3000 RPM equals 50 Hz, which has a period of 0.02 seconds per revolution.

What happens to period when frequency doubles?

When frequency doubles, the period is halved. This inverse relationship means high-frequency signals have very short periods, while low-frequency signals have longer periods.