Frequency Converter
Hertz, kilohertz, megahertz, gigahertz and RPM — frequency in radio, processors, monitors and motors, with the exact decimal steps.
Frequency Converter
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Units in this category
| Unit | Symbol | Exactly |
|---|---|---|
| hertz (Hz) | Hz | reference unit for this category |
| kilohertz (kHz) | kHz | 1,000 Hz |
| megahertz (MHz) | MHz | 1,000,000 Hz |
| gigahertz (GHz) | GHz | 1,000,000,000 Hz |
| revolutions per minute (rpm) | rpm | 0.01666667 Hz |
Where these factors come from
Frequency prefixes are decimal (1 GHz = 1000 MHz = 10⁹ Hz). RPM is a rate of 1/60 Hz per revolution — the two are different quantities, related by exactly 60.
All 20 frequency pairs
| from → to | Hz | kHz | MHz | GHz | rpm |
|---|---|---|---|---|---|
| Hz (hertz) | — | 0.001 | 0.000001 | 0.000000001 | 60 |
| kHz (kilohertz) | 1,000 | — | 0.001 | 0.000001 | 60,000 |
| MHz (megahertz) | 1,000,000 | 1,000 | — | 0.001 | 60,000,000 |
| GHz (gigahertz) | 1,000,000,000 | 1,000,000 | 1,000 | — | 60,000,000,000 |
| rpm (revolution per minute) | 0.01666667 | 0.0000166667 | 0.0000000167 | 0 | — |
Conversions by starting unit
hertz (Hz)
Hz to kHzHz to MHzHz to GHzHz to rpm
kilohertz (kHz)
kHz to HzkHz to MHzkHz to GHzkHz to rpm
megahertz (MHz)
MHz to HzMHz to kHzMHz to GHzMHz to rpm
gigahertz (GHz)
GHz to HzGHz to kHzGHz to MHzGHz to rpm
revolutions per minute (rpm)
rpm to Hzrpm to kHzrpm to MHzrpm to GHz
Common questions
Is 1 GHz 1000 MHz?
Yes — frequency prefixes are decimal. CPU and radio figures step by 1000, unlike the 1024 steps of binary storage units.
How do I convert RPM to hertz?
Divide by 60. A 3000 rpm motor spins at 50 Hz, which is why 50 Hz mains regions use 3000/3600 rpm synchronous speeds.
Why do monitors list refresh in Hz?
Refresh rate is cycles per second too: 60 Hz means the panel redraws 60 times each second, so the unit is identical to radio frequency.