Converter category
Frequency Converter
Convert between hertz, kilohertz, megahertz, gigahertz, terahertz, RPM, radians per second, and beats per minute.
Universal Frequency Converter
About frequency conversions
Frequency conversions are essential in electronics, telecommunications, audio engineering, physics, and mechanical rotation. Our frequency converter covers the hertz family from hertz to kilohertz, megahertz, gigahertz, and terahertz, plus rotational units such as revolutions per minute and radians per second. It also includes beats per minute for music and biology. Whether you are tuning a radio, analyzing a processor clock, setting a metronome, or studying waves, this converter provides accurate conversions between all common frequency units.
Most popular frequency conversions
Available units
Popular frequency conversions (14 total)
Unit definitions
Hertz (Hz)
A hertz is one cycle per second, the SI unit of frequency. Named after Heinrich Hertz.
Origin: Established as official SI unit in 1960, named after German physicist Heinrich Hertz.
Current use: Radio frequencies, Audio frequencies, CPU clock speeds
Kilohertz (kHz)
A kilohertz is 1000 cycles per second. Used for audio and lower radio frequencies.
Origin: Metric prefix kilo- denotes 1000.
Current use: AM radio, Audio processing, Acoustics
Megahertz (MHz)
A megahertz is 1 million cycles per second. Used for FM radio and computer processors.
Origin: Became widely known with early personal computer processors.
Current use: FM radio, CPU clock speeds, Wireless communications
Gigahertz (GHz)
A gigahertz is 1 billion cycles per second. Standard for modern computer processors.
Origin: Consumer CPUs reached 1 GHz in 1999 (AMD Athlon 1000).
Current use: Modern CPUs, Microwave frequencies, Wireless networks
Terahertz (THz)
A terahertz is 1 trillion cycles per second. Region between microwave and infrared.
Origin: Terahertz gap refers to frequencies too high for electronics but too low for optics.
Current use: Security imaging, Medical imaging, Materials testing
Revolutions per Minute (RPM)
RPM measures rotational speed - how many full rotations occur in one minute.
Origin: Used since Industrial Revolution for machinery.
Current use: Engine speed, Motors, Hard drives
Radian per Second (rad/s)
Angular velocity in radians per second. 1 rad/s = 9.55 RPM.
Origin: SI unit for angular velocity.
Current use: Physics, Robotics, Mechanical engineering
Beats per Minute (BPM)
BPM measures heart rate or music tempo. Normal resting heart rate is 60-100 BPM.
Origin: Standard in music notation and medical practice.
Current use: Heart rate monitoring, Music tempo, Medical assessment
Common uses for frequency conversions
Frequency conversions are used in radio tuning, audio engineering, processor clocks, wireless communications, motor speed, music tempo, and physics.
Frequently asked questions about frequency
How many hertz are in 1 kilohertz?+
1 kilohertz equals 1,000 hertz.
How do you convert RPM to hertz?+
Divide RPM by 60. One hertz equals one cycle per second, while RPM is cycles per minute.
Which frequency units does this converter support?+
It supports hertz, kilohertz, megahertz, gigahertz, terahertz, RPM, radian per second, and beats per minute.