Frequency Converter: Convert Hz, RPM, BPM and More
The Frequency Converter changes a frequency value from one unit to another, including hertz, millihertz, kilohertz, megahertz, gigahertz, terahertz, RPM, rad/s, BPM, FPS and cycles per day. Frequency measures cycles per second: RPM and BPM each equal 1/60 Hz, while rad/s equals 1/(2π) Hz. FPS maps directly to hertz. Choose source and target units to view the converted figure.
The Frequency Converter is a browser-based tool for converting frequency values between units such as hertz, millihertz, kilohertz, megahertz, gigahertz, terahertz, RPM, rad/s, BPM, FPS and cycles per day. Use it to convert frequency online when you need a value in a unit that is easier to compare, communicate or work with.
Enter a value, select its source unit and choose a target unit to see the converted figure. Frequency is measured in cycles per second. The converter uses the relationships 1 RPM = 1/60 Hz and 1 BPM = 1/60 Hz; 1 rad/s = 1/(2π) Hz, approximately 0.15915 Hz. Frames per second (FPS) equals hertz directly. These mappings help connect rotational and cycle-based measurements.
The units describe frequency in different ways. Hertz expresses cycles per second, while RPM and BPM express rotations or beats per minute; rad/s uses radians per second, and FPS expresses frames per second. Converting between them can make measurements easier to compare or present in the unit a calculation or audience expects.
The converter runs entirely in your browser. Your input is processed on your device and is not sent to a server; once the page has loaded, conversions also work offline. The tool is free to use.
Developers, engineers and other users can use the converter when checking measurements, comparing values or translating a frequency into a more familiar unit. Its direct unit selection and stated conversion relationships make common frequency conversions easier to check.
Step 1: Enter the frequency value you want to convert. Check that the number represents the measurement you intend to express in a different unit.
Step 2: Choose the source unit for your value, such as RPM, BPM or hertz. This tells the converter how to interpret the input.
Step 3: Choose the target unit, such as rad/s, FPS or cycles per day. The available unit choices include frequency and rotational measurements.
Step 4: Read the converted figure and use it in the context that needs the target unit. For example, compare an RPM value with its equivalent in hertz.
Use case: Convert frequency measurements when the source and target systems use different units. This helps you compare values without calculating each conversion by hand.
Use case: Check a figure in the unit your audience actually uses. For example, express a frequency in hertz instead of RPM when that is clearer for the reader.
Use case: Convert a set of values at once instead of rounding each one by hand. This can make repeated measurement checks more consistent.
Use case: Compare rotational speed with frequency by converting RPM to hertz. The exact relationship is 1 RPM = 1/60 Hz.
Use case: Work with music or rhythm measurements by converting BPM to hertz. This is useful when a calculation or reference uses cycles per second instead of beats per minute.
Use case: Compare a frame rate with a frequency value by expressing FPS in hertz. FPS equals hertz directly according to the converter's conversion rules.