Frequency Converter — Hz, kHz, MHz, GHz, RPM
Convert frequency between Hertz, kilohertz, megahertz, gigahertz, and RPM instantly.
Presets:
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Result
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Period (1/f)
All Units
Frequency Reference
| Application | Frequency |
|---|---|
| Nigeria mains electricity | 50 Hz |
| Middle C (musical note) | 261.6 Hz |
| AM radio | 535 kHz – 1.7 MHz |
| FM radio | 87.5 – 108 MHz |
| WiFi 2.4 GHz | 2,400 MHz |
| WiFi 5 GHz | 5,000 MHz |
| 4G LTE | 700 MHz – 2,600 MHz |
Frequently Asked Questions
What is frequency measured in?
Frequency is measured in Hertz (Hz), which means cycles per second. Radio frequencies are in MHz or GHz, audio frequencies are in Hz or kHz, and processor speeds are in GHz.
What is the difference between Hz and RPM?
Hz (cycles per second) and RPM (revolutions per minute) both measure rotation or oscillation rate. 1 Hz = 60 RPM. An engine at 3,000 RPM rotates at 50 Hz.
What frequency is Nigerian mains electricity?
Nigeria uses 50 Hz mains electricity (same as Europe and most of Africa), at 230V. The US uses 60 Hz at 120V. Always check appliance compatibility when importing devices.
What are common radio frequency bands?
FM radio: 87.5–108 MHz. AM radio: 535–1,700 kHz. WiFi 2.4 GHz band. WiFi 5 GHz band. 4G LTE: 700 MHz–2.6 GHz. 5G: 600 MHz–100 GHz.
What is the audible frequency range?
Human hearing ranges from about 20 Hz to 20,000 Hz (20 kHz). Below 20 Hz is infrasound; above 20 kHz is ultrasound. Most speech falls in the 300–3,400 Hz range.