Frequency Converter
Convert Hz, kHz, MHz, GHz, and revolutions per minute (RPM).
Unit
Frequency Converter
Generated on April 24, 2026
?What is the Frequency Converter?
A frequency converter moves between hertz (cycles per second), its common multiples (kHz, MHz, GHz), and rotational units (revolutions per minute and per second). Frequency is fundamental in electronics, telecommunications, audio, and mechanical engineering: CPUs run at GHz clock rates, radio stations at MHz carrier frequencies, audio is captured in Hz ranges matching human hearing, and engines spin at thousands of RPM. Being able to translate cleanly between these units helps when reading data sheets, tuning radios, sizing motors, or working on physics problems.
The Formula
Hertz (Hz) is defined as one complete cycle per second. The SI prefixes k, M, G scale by powers of 1,000 (strictly 10³, 10⁶, 10⁹). Rotational speeds are usually expressed in RPM (revolutions per minute) because minute-scale numbers are more intuitive for machinery — 6,000 RPM sounds right for a car engine, while 100 Hz does not. Multiply Hz by 60 to get RPM, or divide RPM by 60 to get Hz.
Practical Examples
A 3.5 GHz CPU clock cycles 3.5 billion times per second — each cycle potentially executing part of an instruction.
The musical note A4 (middle A) has a frequency of 440 Hz — the international tuning standard used by orchestras.
An engine spinning at 6,000 RPM is oscillating at 100 Hz — useful for vibration analysis and resonance design.
FM radio stations broadcast at 87.5 to 108 MHz in most countries, with each station separated by 0.1 MHz.
A 50 Hz electrical grid (used in Pakistan, Europe, Asia) cycles 50 times a second; the US grid runs at 60 Hz.
Wi-Fi 6 operates on 2.4 GHz and 5 GHz bands, and newer Wi-Fi 6E adds 6 GHz — different bands trade range for speed.