Frequency converter
Convert between hertz, kilohertz, megahertz, gigahertz, revolutions per minute and beats per minute, then watch a wave oscillate at the frequency you typed.
That's about the same as FM radio. As a radio wave, one wave would be 2.998 m long.
What it means
What does that look like?
The wavelength shown is for sound in air at 20 °C (343 m/s). Radio waves travel at the speed of light, so their wavelengths are far longer.
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Learn
Three things worth knowing
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rpm to hertz: divide by 60
An engine at 3,000 rpm turns 50 times a second, so 50 Hz. Going the other way, multiply hertz by 60.
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Hertz proved radio waves exist
Heinrich Hertz built the first transmitter and receiver in the 1880s, proving Maxwell right. The unit was named after him in 1930, replacing "cycles per second".
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Gigahertz is not speed
A 3.5 GHz processor ticks 3.5 billion times a second, but does not necessarily do more work than a 3 GHz one. How much happens per tick matters just as much.
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Background
About frequency units
Frequency counts how often something repeats each second. The SI unit is the hertz: one cycle per second. Mains electricity runs at 50 or 60 Hz, concert pitch A is 440 Hz, and Wi-Fi works at billions of hertz.
Engines and record players count the same thing in revolutions per minute, which is simply hertz multiplied by 60.