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Frequency Converter

Convert hertz, kilohertz, megahertz and gigahertz.

  • Free
  • Instant results
  • Runs in your browser
In short

1 GHz = 1,000 MHz = 1,000,000 kHz = 1,000,000,000 Hz. Each prefix step multiplies by a thousand.

About the Frequency Converter

A frequency converter is a device that helps users change the frequency values ​​between different devices. It is widely used in electrical engineering, physics, telecommunications, sound treatment and industrial automation to ensure accurate frequency measurements in different applications.


Common Frequency Conversions:


  • Hz (Hz) for KHz (KHz): Radio is used in waves, sound signals and electronics.
  • Kilohertz (KHz) to MHz (MHz): Common in telecommunications and broadcasting.
  • Megahertz (MHz) for Gigahertz (GHz): Data processing and wireless network.
  • Revolutions per minute from Hz (Hz): Important in mechanical and motor applications.
  • Wavelength for frequency: Important in optics and wave physics.


Key Frequency Conversion Formulas:


1. Hertz to Kilohertz:

1 kHz=1000 Hz


2. Kilohertz to Megahertz:

1 MHz=1000 kHz


3. Megahertz to Gigahertz:

1 GHz=1000 MHz


4. RPM to Hertz:

Frequency (Hz)=60/RPM​


5. Wavelength to Frequency:

f=λ/c​


where:

  • f = frequency (Hz)
  • c = speed of light in vacuum (≈ 3.0 × 10⁸ m/s)
  • λ = wavelength (m)


Key Uses of the Frequency Converter:


  • Electronics and signal processing: Change between Hz, KHz, MHz and GHz for circuit design.
  • Radio and telecommunications: Adjust frequencies for broadcasting and networks.
  • Mechanical engineering science: Change RPM to Hz for calculating engine speed.
  • Wave Physics and Optics: Convert wavelength to frequencies for light and sound application.
  • Audio and music production: Adjust the sound wave frequencies for improving pitch and mixture.


How it works

1. Select the Input Frequency Unit

  • Example: 1000 Hz (Hertz)


2. Select the Output Unit

  • Example: Convert to Kilohertz (kHz)


3. Click ‘Convert’

  • The tool calculates and displays the converted frequency instantly.

Examples

Example 1: Convert 5000 Hz to Kilohertz

Input:

  • Frequency in Hertz: 5000 Hz
  • Convert To: Kilohertz (kHz)

Calculation:

5000÷1000=5 kHz


Result:

  • 5000 Hz = 5 kHz


Example 2: Convert 3600 RPM to Hertz

Input:

  • Rotational Speed in RPM: 3600 RPM
  • Convert To: Hertz (Hz)

Calculation:

3600÷60=60 Hz


Result:

  • 3600 RPM = 60 Hz


Related: Analog-to-Digital Converter, Energy Converter, Power Converter.

Reference tables

Here is a Reference Table for Frequency Conversion:

Frequency Conversion Reference Table

From Unit

To Unit

Conversion Formula

Example Calculation

Hertz (Hz)

Kilohertz (kHz)

Hz ÷ 1,000

5000 Hz = 5000 ÷ 1,000 = 5 kHz

Hertz (Hz)

Megahertz (MHz)

Hz ÷ 1,000,000

2,000,000 Hz = 2,000,000 ÷ 1,000,000 = 2 MHz

Hertz (Hz)

Gigahertz (GHz)

Hz ÷ 1,000,000,000

3,000,000,000 Hz = 3 GHz

Kilohertz (kHz)

Hertz (Hz)

kHz × 1,000

5 kHz = 5 × 1,000 = 5000 Hz

Kilohertz (kHz)

Megahertz (MHz)

kHz ÷ 1,000

1,500 kHz = 1,500 ÷ 1,000 = 1.5 MHz

Megahertz (MHz)

Hertz (Hz)

MHz × 1,000,000

3 MHz = 3 × 1,000,000 = 3,000,000 Hz

Megahertz (MHz)

Kilohertz (kHz)

MHz × 1,000

2 MHz = 2 × 1,000 = 2,000 kHz

Gigahertz (GHz)

Hertz (Hz)

GHz × 1,000,000,000

1 GHz = 1 × 1,000,000,000 = 1,000,000,000 Hz

Gigahertz (GHz)

Megahertz (MHz)

GHz × 1,000

4 GHz = 4 × 1,000 = 4,000 MHz

Frequency Conversion Quick Reference

Hertz (Hz)

Kilohertz (kHz)

Megahertz (MHz)

Gigahertz (GHz)

1 Hz

0.001 kHz

0.000001 MHz

0.000000001 GHz

1,000 Hz

1 kHz

0.001 MHz

0.000001 GHz

1,000,000 Hz

1,000 kHz

1 MHz

0.001 GHz

1,000,000,000 Hz

1,000,000 kHz

1,000 MHz

1 GHz

Frequency Converter: frequently asked questions

How many MHz are in a GHz?

1,000. So 2.4 GHz Wi-Fi is 2,400 MHz.

What is the relationship between frequency and wavelength?

Wavelength = speed ÷ frequency. For radio waves travelling at light speed, 100 MHz gives a 3-metre wavelength.

Why is mains power 50 Hz in some countries and 60 Hz in others?

Historical choice rather than physics: European and Asian grids standardised on 50 Hz, North America on 60 Hz. Equipment built for one may run hot or slow on the other.