- Enter Frequency — Type any numeric value.
- Select Units — Choose from 9 frequency/rotation units (Hz, kHz, MHz, GHz, THz, RPM, rad/s, deg/s, BPM).
- See Results — Real-time conversion with period calculation and all equivalents.
- Copy — Click 'Copy' to copy result.
Frequency Converter — Convert Between Frequency and Rotation Units
The Frequency Converter is a free, instant-use tool for converting between 9 frequency and rotational speed units. Whether you're working with radio frequencies, processor clock speeds, motor RPM, musical tempo, or scientific oscillations, this tool provides accurate real-time conversions with automatic period calculation.
All calculations run entirely in your browser. No data is sent to any server.
Supported Units
- Hertz (Hz) — The SI unit of frequency. One Hz equals one cycle per second. Named after Heinrich Hertz. Used universally in science and engineering.
- Kilohertz (kHz) — 1,000 Hz. Used for audio frequencies (human hearing: 20 Hz to 20 kHz), AM radio, and sample rates.
- Megahertz (MHz) — 1,000,000 Hz. Used for FM radio (88-108 MHz), processor speeds, and wireless communication.
- Gigahertz (GHz) — 1,000,000,000 Hz. Used for modern CPU speeds (e.g., 3.5 GHz), Wi-Fi (2.4/5 GHz), and microwave ovens (2.45 GHz).
- Terahertz (THz) — 10¹² Hz. Used in spectroscopy, security screening, and advanced communication research.
- RPM — Revolutions per minute. Used for engines, motors, hard drives, and mechanical rotation speeds.
- rad/s — Radians per second. Angular velocity in SI units. Used in physics and engineering. 2π rad/s = 1 Hz.
- deg/s — Degrees per second. Angular velocity. Used in robotics, navigation, and gyroscope measurements. 360 deg/s = 1 Hz.
- BPM — Beats per minute. Used in music for tempo and in medicine for heart rate. 120 BPM = 2 Hz.
Key Conversion Factors
- 1 kHz = 1,000 Hz = 60,000 RPM
- 1 MHz = 1,000 kHz = 1,000,000 Hz
- 1 GHz = 1,000 MHz = 10⁹ Hz
- 1 Hz = 60 RPM = 2π rad/s = 360 deg/s = 60 BPM
Features
- Period Calculation — Automatically shows the time period (1/frequency) in the most readable unit.
- 9 Units — Covers electromagnetic, mechanical, and musical/medical frequencies.
- Real-Time — Instant conversion as you type.
- All-Unit View — See all 8 equivalents simultaneously.
Common Use Cases
- Electronics — Convert between Hz, kHz, MHz, GHz for circuit design and testing.
- Music — Convert BPM to Hz and vice versa for audio processing.
- Automotive — Convert engine RPM to Hz for vibration analysis.
- Physics — Convert between linear frequency (Hz) and angular velocity (rad/s).
- Computing — Understand and compare processor clock speeds.
Privacy
All conversions run in your browser. No data is transmitted. Works offline.