Frequency Converter
Convert frequency between hertz, kilohertz, megahertz, gigahertz and revolutions per minute. One RPM is one sixtieth of a hertz.
Enter a value
Result
900 revolutions/minute (rpm) =
15 Hertz (Hz)
900 × 0.0166667 = 15
Show the working
- 1. Convert 900 Revolutions/minute (RPM) to hertzs: 900 × 0.0166667 = 15.
- 2. Convert to Hertz (Hz): 15 ÷ 1 = 15.
900 Revolutions/minute (RPM) in every unit
Where frequencies sit
- Mains power (EU / US)
- 50 Hz / 60 Hz
- Human hearing
- 20 Hz – 20 kHz
- FM radio band
- 87.5–108 MHz
- Wi-Fi 2.4 GHz band
- 2.4 GHz
- Car engine at 3,000 RPM
- 50 Hz
- CPU clock
- 3–5 GHz
Good to know: Engine idling at 900 RPM turns at 15 Hz — divide RPM by 60 to get hertz.
About this tool
Convert frequency between Hz, kHz, MHz, GHz and RPM — for audio, radio, computing and machinery.
Formula
1 kHz = 1,000 Hz; 1 MHz = 1,000,000 Hz; 1 GHz = 1,000,000,000 Hz; 1 RPM = 1/60 Hz.
Reference values
- 1 RPM = 0.0167 Hz
- 60 RPM = 1 Hz
- Mains power: 50 Hz (EU), 60 Hz (US)
Questions people ask
How do you convert RPM to Hz?
Divide by 60: 1,800 RPM = 30 Hz, because a hertz is one revolution per second.
How many Hz is 60 RPM?
Exactly 1 Hz — 60 revolutions a minute is one revolution a second.
What is the difference between MHz and MB/s?
MHz measures frequency (cycles per second); MB/s measures data transferred per second — related but different quantities.
Related tools
How we calculate this
Frequency units follow the SI hertz (one cycle per second); RPM is a 1/60 multiple of the hertz. Source: BIPM (SI Brochure).
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