Frequency Converter
Convert hertz, kilohertz, megahertz, gigahertz, RPM, radians per second and BPM. Type in any unit; all others update instantly.
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About This Converter
This frequency converter supports 8 units spanning SI prefixes, rotational speed, and musical tempo. Every calculation passes through a hertz base, so results are precise whether you are converting radio frequencies in MHz and GHz, motor speeds in RPM, angular velocity in rad/s, or musical tempos in BPM. It is a handy tool for electronics engineers, musicians, physicists, and students.
FAQ
What is the difference between Hz and RPM?
Hertz (Hz) measures cycles per second, while RPM (revolutions per minute) measures complete rotations per minute. To convert: 1 Hz = 60 RPM. RPM is commonly used for motors, engines, and hard drives, while Hz is the SI standard for any periodic event.
What frequencies are radio waves?
Radio waves span a wide range: AM radio uses ~530–1700 kHz, FM radio uses 87.5–108 MHz, Wi-Fi operates at 2.4 or 5 GHz, and 5G cellular can reach up to ~39 GHz (millimeter wave).
What is BPM in music terms?
BPM (beats per minute) is the standard measure of musical tempo. Common tempos: Largo ~40–60 BPM, Andante ~76–108 BPM, Allegro ~120–156 BPM, Presto ~168–200 BPM. Numerically, BPM converts to Hz by dividing by 60 (e.g., 120 BPM = 2 Hz).
Tips for entering values
Select the unit first, then enter a value once — every tile updates instantly.