〰️ Frequency Converter
Convert frequency units, hertz, kilohertz, megahertz, gigahertz, revolutions per minute (RPM) and radians per second. 1 Hz = 60 RPM = 2π rad/s.
1 Hz = 0.001 kHz
1 hertz = 0.001 kilohertz
1 × 0.001 = 0.001
1 Hz equals 0.001 kHz, so multiplying by 0.001 converts the value. The result describes the exact same quantity, only the measuring stick changes.
Popular frequency conversions
All frequency units
| Unit | Symbol | Definition |
|---|---|---|
| Hertz | Hz | One hertz is one cycle per second, the SI unit of frequency. Mains power is 50 or 60 Hz; audible sound spans roughly 20 Hz to 20 kHz. |
| Kilohertz | kHz | A kilohertz is 1,000 Hz. AM radio and audio sample-rate components sit in the kHz range (CD audio samples at 44.1 kHz). |
| Megahertz | MHz | A megahertz is 1,000,000 Hz. FM radio, older CPU clocks and RF bands are quoted in MHz. |
| Gigahertz | GHz | A gigahertz is 1,000 MHz, the clock speed of modern processors and the band of Wi-Fi (2.4/5 GHz) and mobile networks. |
| Revolution per minute | RPM | One revolution per minute is 1/60 Hz. Engine and motor speeds are given in RPM; 3,000 RPM is 50 Hz. |
| Radian per second | rad/s | Angular frequency: one radian per second is 1/(2π) Hz. A full turn is 2π radians, so 1 Hz = 2π ≈ 6.283 rad/s. |
| Beat per minute | BPM | One beat per minute is 1/60 Hz, the musical and heart-rate unit. 120 BPM is exactly 2 Hz. |
Frequently asked questions
How do I convert frequency units?
Choose your two units in the converter above and type a value, the result updates instantly, entirely in your browser. All 7 frequency units on this page are interchangeable, so you can convert in either direction.
Which frequency units can I convert here?
This converter supports 7 frequency units: Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz) and 3 more. Pick any two to convert between them.
What is the most common frequency conversion?
One of the most-used frequency conversions is Hertz to Kilohertz (Hz → kHz). Every frequency pair we support is linked below, each with its own formula and table.
Is this Frequency Converter free and private?
Yes. It is free with no sign-up, uses the exact internationally defined conversion factors, and computes every result locally in your browser, nothing you type is uploaded, and the page keeps working offline.