Frequency Converter Tool
Convert frequency units instantly with our frequency converter tool. Supports Hz, kHz, MHz, GHz conversions with high precision. No registration required, works on all devices.
How to Convert Frequency?
To convert frequency between different units, use the appropriate conversion factors. For example, to convert Hertz to Kilohertz, divide by 1,000. To convert RPM (revolutions per minute) to Hertz, divide by 60. This converter handles all common frequency units including SI units (Hz, kHz, MHz, GHz, THz) and practical units (RPM, BPM, FPS).
Frequency Conversion Principles
1. Hertz (Hz)
The Hertz is the SI unit of frequency, defined as one cycle per second. It is named after Heinrich Hertz and is the most fundamental unit for measuring frequency.
2. SI Multiples
Frequency units use standard SI prefixes: Kilohertz (kHz) = 1,000 Hz, Megahertz (MHz) = 1,000,000 Hz, Gigahertz (GHz) = 1,000,000,000 Hz, and Terahertz (THz) = 1,000,000,000,000 Hz. These are commonly used in radio, telecommunications, and computing.
3. SI Submultiples
For very slow frequencies: Millihertz (mHz) = 0.001 Hz, Microhertz (µHz) = 0.000001 Hz, Nanohertz (nHz) = 0.000000001 Hz. These are used in astronomy, geophysics, and precise timing applications.
4. Rotational Units
RPM (Revolutions Per Minute) and RPS (Revolutions Per Second) are used for rotating machinery. 1 RPM = 1/60 Hz, and 1 RPS = 1 Hz.
5. Musical and Media Units
BPM (Beats Per Minute) is used in music to indicate tempo. FPS (Frames Per Second) is used in video and animation. Both can be converted to Hz by dividing by 60 for per-minute units.
6. Conversion Formulas
- Hz to kHz: Hz ÷ 1,000 = kHz
- kHz to MHz: kHz ÷ 1,000 = MHz
- MHz to GHz: MHz ÷ 1,000 = GHz
- GHz to THz: GHz ÷ 1,000 = THz
- Hz to mHz: Hz × 1,000 = mHz
- RPM to Hz: RPM ÷ 60 = Hz
- Hz to RPM: Hz × 60 = RPM
- BPM to Hz: BPM ÷ 60 = Hz
- Hz to cycles/sec: 1 Hz = 1 cps (equal units)
7. Period Units
Period is the inverse of frequency (Period = 1/Frequency). Period units represent the time duration of one complete cycle. For example, a 1 Hz frequency has a period of 1 second, while a 1000 Hz frequency has a period of 1 millisecond. Period units are useful in timing and oscillation analysis.
8. Common Applications
- Audio frequencies: 20 Hz to 20 kHz (human hearing range)
- Radio AM: 535 kHz to 1,705 kHz
- Radio FM: 88 MHz to 108 MHz
- WiFi: 2.4 GHz and 5 GHz bands
- CPU speeds: 1-5 GHz
- Engine RPM: 600-7,000 RPM (typical automotive)
- Music tempo: 60-200 BPM (typical range)
- Video frame rate: 24-120 FPS
Common Frequency Units
Hertz (Hz)
The SI unit of frequency, representing one cycle per second. Used as the base unit for all frequency measurements.
Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz), Terahertz (THz)
SI multiples of Hertz used for higher frequencies. Common in telecommunications, radio, computing, and electronics.
Millihertz (mHz), Microhertz (µHz), Nanohertz (nHz)
SI submultiples used for very low frequencies in scientific applications like astronomy and geophysics.
RPM and RPS
Revolutions per minute and per second, used for rotating machinery like engines, motors, and turbines.
BPM and FPS
Beats per minute (music tempo) and Frames per second (video/animation frame rate).
Cycles per second (cps)
An older term that is equivalent to Hertz. Still used in some contexts but Hz is now standard.
Period Units (s(p), ms(p), µs(p), etc.)
Period units represent the time duration of one complete cycle. They are the inverse of frequency: 1 Hz = 1 second period, 1000 Hz = 1 millisecond period. Useful for timing analysis and oscillation measurements.
