Frequency Converter
Convert frequency units: Hz, kHz, MHz, GHz, THz, and RPM
Full Frequency Conversion Table
Hertz (Hz)
1,000,000
Kilohertz (kHz)
1,000
Megahertz (MHz)
1
Gigahertz (GHz)
0.001
Terahertz (THz)
0.000001
RPM (rpm)
60,000,000
How to Convert Frequency
Enter the frequency value and select units. Instantly calculates Hz↔kHz, MHz↔GHz, and more.
What are Hz, kHz, MHz, and GHz?
Hertz (Hz) is the SI frequency unit, measuring cycles per second. 1 kHz = 1,000 Hz, 1 MHz = 1,000,000 Hz, 1 GHz = 1,000,000,000 Hz.
Frequently Asked Questions
How many Hz is 1 MHz?
1 MHz (megahertz) is 1,000,000 Hz (one million hertz).
How many MHz is 1 GHz?
1 GHz = 1,000 MHz. Commonly used for CPU clock speeds.
What is the relationship between RPM and Hz?
1 rpm = 1/60 Hz. For example, 3,600 rpm = 60 Hz.
Are AM radio frequencies in kHz or MHz?
AM radio uses kHz (540–1,700 kHz), FM radio uses MHz (87.5–108 MHz).
How many Hz is a 2.4 GHz CPU?
2.4 GHz = 2,400,000,000 Hz (2.4 billion hertz).