Frequency Converter
Convert between Hz, kHz, MHz, GHz, RPM, and more instantly
Quick Examples
What is Frequency?
Frequency is the number of occurrences of a repeating event per unit of time. It is measured in hertz (Hz), which represents one cycle per second. Frequency is a fundamental concept in physics, electronics, music, and many other fields.
Our frequency converter allows you to easily convert between different frequency units including Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz), Terahertz (THz), as well as rotational units like RPM (revolutions per minute) and radians per second.
Common Frequency Applications
Electronics & Computing
CPU clock speeds (GHz), RAM frequencies (MHz), and wireless communications (2.4 GHz WiFi, 5G networks)
Audio & Music
Musical notes (440 Hz for A4), audio sampling rates (44.1 kHz for CD quality), and sound wave frequencies
Electrical Power
AC power frequencies (50 Hz in Europe, 60 Hz in North America) and power grid systems
Mechanical Systems
Motor speeds (RPM), engine frequencies, vibration analysis, and rotational measurements
Frequency Units Explained
Hertz (Hz)
The SI unit of frequency, representing one cycle per second. Named after Heinrich Hertz. Commonly used for sound waves, electrical signals, and radio frequencies.
Kilohertz (kHz) & Megahertz (MHz)
1 kHz = 1,000 Hz and 1 MHz = 1,000,000 Hz. Used for AM/FM radio, audio sampling rates, and processor speeds in older computers.
Gigahertz (GHz) & Terahertz (THz)
1 GHz = 1 billion Hz and 1 THz = 1 trillion Hz. GHz is common for modern CPU speeds and WiFi frequencies. THz is used in advanced applications like spectroscopy and medical imaging.
RPM (Revolutions Per Minute)
A unit of rotational speed. Common in automotive (engine RPM), fans, hard drives, and other rotating machinery. 60 RPM equals 1 Hz.
Frequently Asked Questions
How do I convert Hz to MHz?
To convert Hertz to Megahertz, divide by 1,000,000. For example, 5,000,000 Hz = 5 MHz. Our tool does this automatically for you.
What's the relationship between RPM and Hz?
RPM (revolutions per minute) and Hz (cycles per second) both measure frequency. To convert RPM to Hz, divide by 60. For example, 3,600 RPM = 60 Hz.
Is this tool accurate for scientific calculations?
Yes, our converter uses precise mathematical conversions based on standard SI unit definitions. It's suitable for educational, professional, and scientific use.
What frequency is middle C in music?
Middle C (C4) has a frequency of approximately 261.63 Hz. The note A4, used as a tuning standard, is exactly 440 Hz.
Can I convert between all units?
Yes! Our tool supports conversion between all listed frequency units including Hz, kHz, MHz, GHz, THz, RPM, RPS, and radians per second.