Frequency Converter
Convert between Hz, kHz, MHz, GHz, THz, RPM, rad/s, BPM instantly. Free online frequency converter with real-time results.
What is frequency?
Frequency is the number of occurrences of a repeating event per unit of time. It is measured in hertz (Hz), where 1 Hz equals one cycle per second. Frequency is fundamental in physics, engineering, music, and telecommunications.
What is a Hertz?
Hertz (Hz) is the SI unit of frequency, named after physicist Heinrich Hertz. One hertz equals one cycle per second. It is used to describe wave frequencies, clock speeds, and any periodic phenomenon.
What frequency units does this tool support?
This converter supports Hz, kHz, MHz, GHz, THz (metric units), RPM (revolutions per minute), rad/s (angular frequency), and BPM (beats per minute). It covers applications from audio engineering to motor speed measurement.
How do I convert Hz to kHz?
To convert Hertz to Kilohertz, divide the frequency value by 1,000. For example, 5,000 Hz = 5 kHz. The prefix 'kilo' means one thousand.
How do I convert RPM to Hz?
To convert RPM (revolutions per minute) to Hz, divide the RPM value by 60. For example, 3,600 RPM = 60 Hz, because there are 60 seconds in a minute.
How do I convert rad/s to Hz?
To convert radians per second to Hertz, divide the angular frequency by 2π (approximately 6.2832). One complete cycle equals 2π radians. For example, 6.2832 rad/s ≈ 1 Hz.
What is the relationship between frequency and wavelength?
Frequency and wavelength are inversely related: frequency = speed of light / wavelength. Higher frequency means shorter wavelength. This relationship is fundamental in electromagnetic wave physics.
What is the difference between BPM and Hz?
BPM (beats per minute) measures tempo in music, while Hz measures cycles per second. To convert BPM to Hz, divide by 60. For example, 120 BPM = 2 Hz. BPM is common in music; Hz in science and engineering.
What are common frequency ranges?
Human hearing: 20 Hz - 20 kHz. Radio waves: 3 kHz - 300 GHz. Wi-Fi: 2.4 GHz and 5 GHz. CPU clocks: 1-5 GHz. Visible light: 430-750 THz. These ranges define different applications in technology and nature.
How is frequency used in music?
Musical notes correspond to specific frequencies. A4 (concert pitch) = 440 Hz. Each octave doubles the frequency. Understanding frequency helps musicians tune instruments and engineers design audio equipment.
Is my data sent to a server?
No, all calculations are performed entirely in your browser using JavaScript. No data is transmitted to any server. Your privacy is fully protected.
Can I use this tool offline?
Yes, once the page is loaded, all conversions work without an internet connection since calculations happen locally in your browser.
How to Use Frequency Converter
Convert frequencies between Hz, kHz, MHz, GHz, THz, RPM, rad/s, and BPM instantly in your browser. Results update in real time and nothing is sent to any server.
- Type the numeric value you want to convert into the input field.
- In the From dropdown, pick the unit of your input, for example RPM.
- In the To dropdown, choose the target unit, for example Hz.
- Read the converted result immediately, then change either unit to run another conversion.
RPM counts rotations while rad/s measures angles: 60 RPM equals exactly 2π rad/s, so checking a known pair is a quick way to confirm the units are set right.
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