How to Use This Tool
Enter a Value
Type the frequency you want to convert into the input field. Decimals and scientific notation are supported.
Choose Your Units
Pick a From unit and a To unit from the dropdowns. Use the swap button to flip them instantly.
Read the Result
The converted value appears instantly below the inputs. Click Copy to put it on your clipboard.
See All Conversions
Scroll down to see the same frequency converted into every other supported unit at once.
Frequently Asked Questions
Is this tool really free?
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Yes, completely free with no limits and no sign-up. Everything runs in your browser with no server costs.
Is my data sent to a server?
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No. All conversion math happens directly in your browser. Nothing you type is ever sent anywhere.
What units are supported?
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10 units: Hertz, Kilohertz, Megahertz, Gigahertz, Terahertz, RPM (revolutions per minute), Revolutions per second, Radians per second, Degrees per second, and Cycles per minute.
What is the difference between Hz and RPM?
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Hertz measures cycles per second while RPM measures revolutions per minute. 1 Hz = 60 RPM. Use Hz for waves and signals, RPM for motors and rotating machinery.
What is Radians per second?
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Radians per second measures angular velocity. One full rotation is 2 pi radians, so 1 Hz = about 6.283 radians per second. It is used in physics and engineering.
What is Terahertz?
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Terahertz (THz) is one trillion hertz. It is used for very high frequency electromagnetic waves, including some imaging and spectroscopy applications.
How do I convert MHz to GHz?
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Set From to Megahertz and To to Gigahertz. 1 GHz = 1,000 MHz. So 2,400 MHz (common WiFi frequency) is 2.4 GHz.
How accurate are the conversions?
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The tool uses standard conversion factors and displays up to 10 significant figures. Results are accurate for everyday, educational, and professional use.
Can I see all conversions at once?
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Yes. Below the main result, the tool shows the same value converted into every other unit in a scrollable list.
Does it support decimals?
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Yes. You can type values like 2.4, 0.5, or 4.33e9. The tool handles all standard number formats.
What Is Frequency Converter?
Frequency Converter is a free tool that converts between 10 frequency units right in your browser. It covers the hertz family (Hz through THz) for waves and signals, RPM and revolutions per second for rotating machinery, and angular units (radians per second, degrees per second) for physics and engineering. Nothing you type is ever sent anywhere - all math runs locally on your device.
The result updates live as you type, and a full conversion table shows the same value in every other unit at once. Use the swap button to flip your units instantly, or copy the result to your clipboard in one click.
Features Explained
10 Frequency Units
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Convert between Hertz, Kilohertz, Megahertz, Gigahertz, Terahertz, RPM, Revolutions per second, Radians per second, Degrees per second, and Cycles per minute.
Hertz Family
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Hz, kHz, MHz, GHz, and THz cover everything from audio frequencies (20 Hz to 20 kHz) through radio waves (MHz) to processor speeds (GHz) and beyond (THz).
RPM for Rotating Machinery
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Revolutions per minute is the standard unit for motors, engines, fans, turntables, and any rotating equipment. 1 Hz = 60 RPM.
Angular Velocity
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Radians per second and Degrees per second measure how fast something rotates in angular terms, used in physics, robotics, and engineering.
Instant Conversion
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The result updates live as you type. There is no Convert button to click - you see the answer the moment your input changes.
All Conversions at Once
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Below the main result, a scrollable table shows the same frequency converted into every other unit simultaneously.
Swap Button
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Click the swap button between the From and To dropdowns to flip them instantly. The result recalculates right away.
Copy to Clipboard
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Click Copy to put the converted value on your clipboard instantly, ready to paste into a document, spec sheet, or message.
High Precision
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Results are displayed with up to 10 significant figures, accurate enough for both everyday and professional calculations.
100% Browser-Based
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All conversion math runs directly in your browser. Nothing you type is ever sent to any server - complete privacy.
Who Is This Tool For?
Electrical Engineers
Convert between Hz, kHz, MHz, and GHz for circuit design, signal processing, and communication system specifications.
Mechanical Engineers
Convert between RPM, Hz, and radians per second for motor sizing, gear ratios, and vibration analysis.
Audio Engineers
Convert audio frequencies between Hz and kHz for equalizer settings, speaker crossovers, and sound design.
Musicians
Convert tuning frequencies between Hz and kHz. For example, concert A is 440 Hz.
Radio Operators
Convert radio frequencies between kHz, MHz, and GHz for tuning, licensing, and band planning.
Students
Convert between frequency units for physics, electronics, and engineering homework and lab reports.
Teachers
Demonstrate frequency conversions in real time during lessons about waves, sound, and electromagnetism.
IT Professionals
Convert processor clock speeds between MHz and GHz when comparing hardware specifications.
Automotive Mechanics
Convert engine RPM to Hz or radians per second for diagnostic calculations and vibration analysis.
Robotics Engineers
Convert servo and motor speeds between RPM, radians per second, and degrees per second for motion planning.
Physicists
Convert between Hz, radians per second, and angular velocity units for wave mechanics and rotational dynamics.
HVAC Technicians
Convert fan and compressor speeds between RPM and Hz for motor drive settings and troubleshooting.
Drone Operators
Convert propeller speeds between RPM and Hz for flight controller tuning and motor selection.
Turntable Enthusiasts
Convert vinyl playback speeds between RPM and Hz for turntable setup and pitch adjustment.
Astronomers
Convert rotation periods and pulsar frequencies between Hz and RPM for observation data.
Machinists
Convert spindle speeds between RPM and surface speed for lathe and mill feed rate calculations.
Telecommunications Workers
Convert carrier frequencies between MHz and GHz for antenna design and spectrum planning.
Medical Equipment Technicians
Convert ultrasound and imaging frequencies between MHz and GHz for equipment calibration.
Vibration Analysts
Convert vibration frequencies between Hz, RPM, and radians per second for predictive maintenance.
Gamers and PC Builders
Convert monitor refresh rates and CPU clock speeds between Hz, MHz, and GHz for performance comparisons.
Scientists
Convert between SI frequency units and angular velocity for research data and publications.
Industrial Workers
Convert motor and conveyor speeds between RPM and Hz for variable frequency drive settings.
Photographers
Understand flash sync speeds and shutter frequencies by converting between Hz and cycles per minute.
Anyone
Quickly convert any frequency for any reason - electronics, music, machines, science, or curiosity.
Tips for Best Results
Hz to RPM is simple
1 Hz = 60 RPM. To convert Hz to RPM, multiply by 60. To convert RPM to Hz, divide by 60.
Common WiFi frequency
WiFi runs at 2.4 GHz (2,400 MHz) and 5 GHz (5,000 MHz). Use this tool to see those frequencies in any other unit.
Audio range
Human hearing spans roughly 20 Hz to 20 kHz (20,000 Hz). Musical instruments and voices fall within this range.
Processor speeds
Modern processors run at a few GHz. 1 GHz = 1,000 MHz = 1,000,000,000 Hz.
Radians per second for physics
1 Hz = about 6.283 radians per second (2 pi). This unit is standard in physics and engineering for angular velocity.
Use the All Conversions table
Scroll below the main result to see the same frequency in every other unit at once.
Use the swap button
Click the swap button between the dropdowns to flip From and To instantly.
Copy the result in one click
Click Copy next to the result to put the value on your clipboard.
Scientific notation for large values
Radio and processor frequencies are very large numbers. Type 2.4e9 instead of 2,400,000,000 for 2.4 GHz in Hz.
Privacy is built in
Nothing you type is ever sent to any server. All math runs in your browser, so your data stays completely private.
Privacy & Security
This tool runs 100% in your browser. Your files stay entirely on your own device. Nothing is uploaded, nothing is shared, and no server, advertiser, or third party has access to your files.
If a tool saves your work on your own device, you can remove it at any time using the Clear All button. Some tools rely on an external service to return their result; in those cases, only the minimum data required for the request is sent, and never your files or content. Any ads shown on this page run in an isolated frame and cannot read, touch, or transmit anything you upload, paste, type, or download here. Advertisers may see standard visit information like your IP address and which page you're on, as described in our Privacy Policy, but your data itself stays fully under your control.
