Frequency Converter

Convert any frequency value between units instantly. Enter your value and select the From Unit and To Unit — choose from Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz), Terahertz (THz), Millihertz (mHz), and Radians per second (rad/s). You get the converted frequency along with a full breakdown across all common units at once.

Enter the frequency value you want to convert.

Select the unit of your input frequency.

Select the unit you want to convert to.

Results

Converted Frequency

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Millihertz (mHz)

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Hertz (Hz)

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Kilohertz (kHz)

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Megahertz (MHz)

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Gigahertz (GHz)

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Terahertz (THz)

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Radians per second (rad/s)

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Frequency Across Units (relative scale)

Results Table

Frequently Asked Questions

What is a frequency converter?

A frequency converter is a tool or device that changes a frequency value from one unit to another — for example, converting Hertz (Hz) to Kilohertz (kHz) or Megahertz (MHz). In the context of electrical power, a frequency converter can also refer to an electronic device that changes AC power from one frequency (e.g. 50 Hz) to another (e.g. 60 Hz).

How does frequency conversion work mathematically?

All frequency units are related to the base unit Hertz (Hz). To convert between units, you multiply or divide by powers of 10. For example, 1 kHz = 1,000 Hz, 1 MHz = 1,000,000 Hz, and 1 GHz = 1,000,000,000 Hz. Radians per second (rad/s) relates to Hz by the formula: rad/s = 2π × Hz.

What is the difference between 50 Hz and 60 Hz?

50 Hz and 60 Hz are the two standard AC power frequencies used around the world. Europe, Asia, Africa, and Australia predominantly use 50 Hz, while North America and parts of South America use 60 Hz. Using electrical equipment rated for one frequency on a supply of the other can cause issues such as overheating or incorrect motor speeds.

Can I run a 50 Hz motor on a 60 Hz power supply?

Running a 50 Hz motor on 60 Hz power generally increases its speed by about 20%, which can cause overheating, excess noise, and reduced efficiency. Similarly, a 60 Hz motor on 50 Hz power will run slower than rated. A frequency converter device is used to safely adapt power supply frequency for such equipment.

What is 400 Hz frequency used for?

400 Hz power is primarily used in aerospace and military applications, including aircraft on-board systems and military vehicles. Its higher frequency allows for smaller, lighter transformers and motors compared to 50 Hz or 60 Hz systems, making it ideal for weight-sensitive environments.

How do I convert Hertz to radians per second?

To convert Hertz (Hz) to radians per second (rad/s), multiply the frequency in Hz by 2π (approximately 6.2832). For example, 60 Hz equals 60 × 2π ≈ 376.99 rad/s. This conversion is commonly used in electrical engineering and physics calculations.

What are common frequency units and their scales?

Common frequency units include Millihertz (mHz, 10⁻³ Hz), Hertz (Hz, the base unit), Kilohertz (kHz, 10³ Hz), Megahertz (MHz, 10⁶ Hz), Gigahertz (GHz, 10⁹ Hz), and Terahertz (THz, 10¹² Hz). Radio waves are typically measured in kHz to GHz, while visible light frequencies reach into THz ranges.

What is the difference between frequency and voltage?

Frequency refers to how many cycles per second an alternating current (AC) completes, measured in Hertz (Hz). Voltage refers to the electrical potential difference, measured in Volts (V). They are independent properties — a frequency converter changes the cycle rate without necessarily altering voltage, though many AC power converters handle both simultaneously.

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