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Convert Between Hz, kHz, MHz, GHz & RPM Convert between Hertz, kilohertz, megahertz, gigahertz, and RPM.

Frequency Converter illustration
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Frequency Converter

Convert between Hertz, kilohertz, megahertz, gigahertz, and RPM.

1

Enter frequency

Type the frequency value.

2

Choose units

Select source and target frequency units.

3

View the converted frequency

Converted frequency appears in real time.

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What Is Frequency Converter?

A Frequency Converter translates between units measuring the number of occurrences of a repeating event per unit time, such as Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), and Gigahertz (GHz). Electronics engineers use it to convert Hz to MHz or GHz to MHz when designing digital circuits. One specific problem it solves is converting between rotational speed in mechanical systems, measured in RPM (revolutions per minute), to frequency units like Hz.

It supports conversions from RPM to Hz, allowing mechanical engineers to analyze vibration frequencies in rotating machinery. What makes this tool different is its support for a range of conversion factors and reference values, including the relationship between GHz and MHz, with a specific val of 2400 when converting from MHz to GHz. The default units are set to convert from MHz to GHz.

The unit definitions include precise symbols and factors, such as 1e6 for MHz and 1e9 for GHz, ensuring accurate conversions like Hz to Ghz or convert mhz to ghz. This level of detail enables accurate frequency unit conversion in various fields, including telecommunications and audio engineering, where converting between kHz, MHz, and Hz is crucial. The reference values also include a conversion from RPM to Hz with a factor of 60, demonstrating its capability for rpm to hz conversions.

Why Use Frequency Converter?

  • Covers Hz through GHz plus RPM for rotational frequency.
  • Essential for electronics, audio, and telecommunications.
  • Real-time bidirectional conversion.
  • Quick reference for common frequency values.
  • Completely client-side calculation.

Common Use Cases

Electronics

Convert processor clock speeds between MHz and GHz.

Audio

Work with sampling rates and audio frequency ranges in Hz and kHz.

Telecommunications

Translate radio and wireless frequencies across different measurement scales.

Mechanical Engineering

Switch between RPM and Hz for motor and engine speed calculations.

Technical Guide

Frequency measures how often a repeating event occurs per unit time.

• 1 kHz = 1,000 Hz
• 1 MHz = 1,000,000 Hz
• 1 GHz = 1,000,000,000 Hz
• 1 RPM = 1/60 Hz

Common frequency ranges:
• Human hearing: 20 Hz to 20 kHz
• AM radio: 530 kHz to 1,700 kHz
• FM radio: 87.5 MHz to 108 MHz
• Wi-Fi 2.4 GHz band: 2,400-2,500 MHz
• Wi-Fi 5 GHz band: 5,150-5,850 MHz
• Modern CPUs: 3-6 GHz

The relationship between frequency (f), period (T), and wavelength (λ) is fundamental: f = 1/T, and for electromagnetic waves, c = fλ where c is the speed of light.

Tips & Best Practices

  • 1
    Wi-Fi operates at 2.4 GHz = 2,400 MHz and 5 GHz = 5,000 MHz.
  • 2
    To convert RPM to Hz, divide by 60. A 3600 RPM motor = 60 Hz.
  • 3
    Musical note A4 (concert pitch) = 440 Hz.
  • 4
    CPU speeds: 3.5 GHz = 3,500 MHz = 3,500,000,000 Hz.

Related Tools

Frequently Asked Questions

Q How do I convert MHz to GHz?
Divide MHz by 1,000. For example, 2,400 MHz = 2.4 GHz.
Q What is the relationship between RPM and Hz?
1 RPM = 1/60 Hz. To convert RPM to Hz, divide by 60. A 3,600 RPM motor spins at 60 Hz.
Q What frequency range can humans hear?
Typically 20 Hz to 20,000 Hz (20 kHz), though this range decreases with age.
Q What is the clock speed of a modern CPU?
Typically 3-6 GHz (3,000-6,000 MHz), with some reaching higher through overclocking.
Q How is Hz related to the period of a wave?
Frequency (Hz) is the reciprocal of the period: f = 1/T. A 1 Hz signal has a period of 1 second; a 1 kHz signal has a period of 1 millisecond.

About This Tool

Frequency Converter is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.