Frequency Converter for Hz, kHz, MHz, GHz and More
This frequency converter turns any value into every other frequency unit at once, so you can move between Hertz, Kilohertz, Megahertz, Gigahertz, RPM, BPM and more without doing the math by hand. Enter one number and read instant, accurate results across electronics, audio, video and mechanical units.
It is built for electronics engineers reading radio frequencies and clock speeds, audio professionals working with sampling and oscillator rates, video editors juggling frame rates, musicians and DJs handling tempo, and mechanical engineers calculating motor and rotational speeds. Students working with waves and periodic measurements get the same one-screen answer.
How to Use the Frequency Converter
Enter a value
Type a number into the input field. Large numbers are automatically grouped with thousand separators so they stay easy to read and verify.
Pick your source unit
Open the unit dropdown and choose what you are converting from. Start typing a name or symbol like mhz or rpm to search, or use Swap units to flip the two sides.
Read every result instantly
All enabled units update live below, grouped into Metric, Rotational and Practical. There is no convert button to press.
Fine-tune and copy
Set decimal precision, use Customize Units to show only the units you need, then click a row to copy one value or Copy All Results to grab them together.
Features
Instant Conversion
Results update in real time as you type. Enter a value and every conversion appears immediately, with no button to click or processing to wait for.
Comprehensive Unit Support
Convert between 16 frequency units across metric, rotational and practical systems, from Hz, kHz, MHz, GHz and THz to RPM, rad/s, BPM and FPS.
Smart Input Formatting
Large numbers are automatically grouped with thousand separators, so a value like 1 000 000 stays easy to read and check at a glance.
Searchable Unit Selection
The unit dropdown includes a search box. Start typing a unit name or symbol, such as "mhz" or "rpm", to jump straight to what you need.
Customizable Display
Use Customize Units to toggle each unit on or off by group, so the results list shows only the metric, rotational or practical units relevant to your work.
Precision Control
Choose 2, 4, 6 or 8 decimal places, or pick Auto. Higher precision suits scientific work, while fewer decimals keep everyday results easy to read.
One-Click Copy
Copy any single result, or use Copy All Results to grab every value at once in a clean format ready to paste into documents and spreadsheets.
Unit Reference Guide
A built-in reference panel explains each unit's value relative to Hertz and its typical usage, handy for less familiar units like rad/s, THz or cph.
Works Everywhere
A fully responsive layout works on desktop, tablet and mobile, so you can convert frequencies in the studio, in the lab or out on site.
Frequently Asked Questions
How do you convert Hz to kHz, MHz and GHz?
Each step up divides by 1,000: 1,000 Hz = 1 kHz, 1,000 kHz = 1 MHz, and 1,000 MHz = 1 GHz. So 1 GHz equals 1,000 MHz, 1,000,000 kHz, and 1,000,000,000 Hz. Enter your value once and the converter shows every level at the same time.
How many Hz are in 1 MHz?
1 MHz equals 1,000,000 Hz (one million cycles per second). To go from MHz to GHz instead, divide by 1,000, so 2,400 MHz = 2.4 GHz, a common WiFi frequency.
What is the formula to convert frequency units?
Every unit is defined relative to the base unit, Hertz. The converter multiplies your value by the source unit's factor in Hz, then divides by the target unit's factor in Hz. You never have to apply the factors yourself: just enter a value and read the result.
How do I convert RPM to Hz?
RPM (revolutions per minute) divides by 60 to give Hz, because one Hertz is one revolution per second. So 60 RPM = 1 Hz, and a motor spinning at 3,600 RPM runs at 60 Hz. Going the other way, 1 Hz = 60 RPM.
How do I convert rad/s to Hz?
Divide radians per second by 2π (about 6.283) to get Hz, since one cycle is 2π radians. For example, 10 rad/s is roughly 1.592 Hz. To reach RPM from rad/s, multiply by 60/(2π) ≈ 9.549, so 10 rad/s ≈ 95.49 RPM. The converter does this automatically.
What is the difference between Hz, kHz, MHz and GHz?
They are the same unit at different scales. Hertz (Hz) counts cycles per second, kilohertz (kHz) is a thousand Hz, megahertz (MHz) is a million Hz, and gigahertz (GHz) is a billion Hz. kHz suits audio, MHz suits radio, and GHz suits CPUs and wireless.
What does BPM mean and how does it relate to Hz?
BPM (beats per minute) measures tempo in music and heart rate in medicine. Like RPM, it divides by 60 to reach Hz, so 120 BPM = 2 Hz. Dance music often sits at 120-150 BPM, while a resting heart rate is around 60-100 BPM.
How accurate are the conversions?
The converter uses internationally recognized conversion factors, so results are accurate to many decimal places for practical purposes. Use the precision selector to display 2, 4, 6 or 8 decimals, or Auto, and very large or very small results switch to scientific notation automatically.
Are my values and settings kept private?
Yes. Every calculation happens in your browser, and nothing you enter is sent to a server. Your display preferences are stored only in your browser's local storage, so clearing your browser data resets them.
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