Convert a frequency in hertz to the time of one cycle, the period. Choose Hz, kHz, MHz or GHz and see seconds, milliseconds, microseconds and nanoseconds. Free, private, and runs entirely in your browser.
The period is the reciprocal of the frequency: the time for one full cycle is 1 divided by the number of cycles per second.
How many seconds is 1 Hz? One hertz is one cycle per second, so the period is exactly 1 second.
What is the period of 50 Hz mains? 0.02 seconds, or 20 milliseconds. At 60 Hz it is about 16.67 ms.
A 50 Hz supply has a period of 1 ÷ 50 = 0.02 s = 20 ms = 20,000 µs. A 2.4 GHz Wi-Fi signal has a period of 1 ÷ 2.4 × 10⁹ ≈ 0.4167 ns.
How do I convert seconds to hertz? Take the reciprocal: f = 1 ÷ T. A period of 0.01 s is 100 Hz.
What is a typical audio frequency? Human hearing spans about 20 Hz to 20 kHz.
The hertz is named for Heinrich Hertz, who demonstrated the existence of electromagnetic waves in the late 1880s. The unit was adopted by the General Conference on Weights and Measures in 1960, replacing the older term cycles per second. Frequency and period are two descriptions of the same repetition.
Use this calculator for oscillators and clocks, audio signals, AC power and radio. A 16 MHz microcontroller clock has a period of 62.5 ns, and a 440 Hz musical note repeats every 2.27 ms.
What is the relationship between frequency and wavelength? Wavelength equals the speed of the wave divided by the frequency. For light, the speed is about 299,792,458 m/s.
What is a cycle? One complete repetition of a periodic signal, such as one full sine wave.