Convert Between Hz, kHz, MHz, GHz & RPM Convert between Hertz, kilohertz, megahertz, gigahertz, and RPM.
Frequency Converter
Convert between Hertz, kilohertz, megahertz, gigahertz, and RPM.
Enter frequency
Type the frequency value.
Choose units
Select source and target frequency units.
View the converted frequency
Converted frequency appears in real time.
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?
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Covers Hz through GHz plus RPM for rotational frequency.
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Essential for electronics, audio, and telecommunications.
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Real-time bidirectional conversion.
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Quick reference for common frequency values.
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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
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1Wi-Fi operates at 2.4 GHz = 2,400 MHz and 5 GHz = 5,000 MHz.
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2To convert RPM to Hz, divide by 60. A 3600 RPM motor = 60 Hz.
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3Musical note A4 (concert pitch) = 440 Hz.
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4CPU speeds: 3.5 GHz = 3,500 MHz = 3,500,000,000 Hz.
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⚖️ Unit ConvertersFrequently Asked Questions
Q How do I convert MHz to GHz?
Q What is the relationship between RPM and Hz?
Q What frequency range can humans hear?
Q What is the clock speed of a modern CPU?
Q How is Hz related to the period of a wave?
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.