Free Online Frequency Converter

Free Online Frequency Conversion Tool

Our comprehensive Frequency Converter is an essential tool for engineers, musicians, students, and anyone working with frequency measurements. This powerful converter allows you to instantly convert between dozens of frequency units including hertz, kilohertz, megahertz, gigahertz, RPM, BPM, cycles per second, and many more. Whether you're working on electronics projects, audio engineering, physics homework, or musical compositions, this tool provides accurate conversions with real-time results.

How to Use This Frequency Converter (Step-by-Step):

• Enter Value: Input the numerical frequency value you want to convert in the "Frequency Value" field
• Select Source Unit: Choose the unit of your input value from the dropdown menu (e.g., hertz, kilohertz, RPM)
• View Results: Instantly see the converted values in all major frequency units in the results panel
• Additional Actions: Use the buttons to copy results, swap units, or reset the converter for new calculations

Real-Life Application Examples:

For Audio Engineering: Convert between hertz and kilohertz when working with audio frequencies. Human hearing ranges from 20 Hz to 20,000 Hz (20 kHz). Converting 440 Hz (musical note A) to kHz gives 0.44 kHz.

For Electronics & Radio: Convert radio frequencies from megahertz to hertz. FM radio stations broadcast between 88-108 MHz, which equals 88,000,000 - 108,000,000 Hz.

For Mechanical Engineering: Convert rotational speeds from RPM to hertz. A hard disk drive spinning at 7,200 RPM rotates at 120 Hz (7,200 ÷ 60 = 120).

For Music Production: Convert BPM (beats per minute) to hertz for timing calculations. A song at 120 BPM has a beat frequency of 2 Hz (120 ÷ 60 = 2).

Common Frequency Unit Definitions:

• Hertz (Hz): The SI unit of frequency, defined as one cycle per second
• Kilohertz (kHz): 1,000 hertz, commonly used for audio frequencies and radio signals
• Megahertz (MHz): 1,000,000 hertz, used for computer processors and radio broadcasting
• Gigahertz (GHz): 1,000,000,000 hertz, used for modern computer processors and microwave signals
• RPM (Revolutions per minute): The number of full rotations completed in one minute
• BPM (Beats per minute): The number of beats occurring in one minute, commonly used in music
• Cycles per second (cps): Equivalent to hertz, an older term for frequency measurement

Who Should Use This Frequency Converter?

• Electronics Engineers & Technicians: Essential for circuit design, signal processing, and radio frequency work
• Audio Engineers & Musicians: Perfect for working with audio frequencies, sampling rates, and musical timing
• Students & Educators: Ideal for physics, engineering, and music technology classes
• Mechanical Engineers: Useful for rotational speed calculations and vibration analysis
• Researchers & Scientists: Valuable across physics, engineering, and telecommunications fields
• DIY Enthusiasts: Great for electronics projects, audio systems, and technical hobbies

Frequently Asked Questions

What's the relationship between hertz and RPM?
1 Hz equals 60 RPM, and 1 RPM equals 1/60 Hz. This is because hertz measures cycles per second, while RPM measures revolutions per minute (60 seconds).

How accurate are the conversions?
Our converter uses precise conversion factors with high precision calculations. For most engineering and scientific purposes, the accuracy is more than sufficient.

Can I convert very high or very low frequencies?
Yes, the converter handles values from extremely low (nanohertz) to extremely high (terahertz) with equal precision.

Is there a mobile app version?
This online tool works perfectly on all mobile devices through your web browser. No app installation is needed.

Are there any usage limits or costs?
No, this is a completely free online tool with no registration required and no usage limits.

Frequency Conversion Factors Reference:

For quick reference, here are some key conversion factors:

• 1 hertz = 0.001 kilohertz = 0.000001 megahertz = 0.000000001 gigahertz
• 1 kilohertz = 1,000 hertz = 0.001 megahertz = 0.000001 gigahertz
• 1 megahertz = 1,000,000 hertz = 1,000 kilohertz = 0.001 gigahertz
• 1 gigahertz = 1,000,000,000 hertz = 1,000,000 kilohertz = 1,000 megahertz
• 1 RPM = 1/60 hertz = 0.016667 hertz
• 1 BPM = 1/60 hertz = 0.016667 hertz
• 1 cycle per second = 1 hertz

Common Frequency Ranges in Practice:

• Human Hearing: 20 Hz - 20,000 Hz (20 kHz)
• AC Power Grid: 50 Hz (Europe) or 60 Hz (North America)
• AM Radio: 530 kHz - 1,710 kHz
• FM Radio: 88 MHz - 108 MHz
• Wi-Fi: 2.4 GHz and 5 GHz
• Computer Processors: 1 GHz - 5+ GHz
• Resting Heart Rate: 60-100 BPM (1-1.67 Hz)
• Typical Music Tempo: 60-180 BPM (1-3 Hz)