Frequency Converters
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SI
hertz
kilohertz
megahertz
gigahertz
terahertz
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Mechanical
RPM
revolutions/second
⚗️
Scientific
radians/second
About frequency conversions
Frequency measures how many times something repeats per second. The SI unit is the hertz (Hz). Common uses include radio frequencies (MHz, GHz), CPU clock speeds (GHz), audio frequencies (Hz, kHz), and engine speeds (RPM).
One megahertz equals 1,000,000 hertz. Wi-Fi operates at 2.4 GHz and 5 GHz. Human hearing ranges from approximately 20 Hz to 20,000 Hz. Engine idle speed is typically 600–900 RPM.
For the international definition, see the NIST reference on SI units of frequency.
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