Frequency Unit Converter
Effortlessly switch between any frequency units. Our tool provides instant and accurate conversions for your needs.
Fast, Free, Private Frequency Unit Converter (Offline)
Convert frequency units instantly Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), and Gigahertz (GHz). 100% client side, lifetime free, and unlimited use. No uploads, no sign ups, truly private.
Top, fast, best-in-class, and unlimited. Your information is 100% confidential and secure.
Why people love this frequency converter
Offline & secure
Runs entirely in your browser your values never leave your device.
Unlimited & free forever
No accounts, no limits convert as much as you want.
Fast & simple
Pick units, type a value, and see instant, accurate results.
Works everywhere
Modern browsers on Windows, Mac, Linux, Android, and iOS.
No data collected
100% client-side processing keeps your data private.
Accurate results
Reliable conversion factors with smart rounding for readability.
Popular uses worldwide
Audio & music
Convert sub-bass to treble ranges (20 Hz–20 kHz), tuning, and test tones.
RF & wireless
Work with radio, Wi Fi, 4G/5G, GPS kHz, MHz, and GHz bands.
Electronics & embedded
Crystal oscillators, MCU timers, PWM, and clock source conversions.
Physics & lab
Wave frequency, period, and spectroscopy calculations.
Education
Learn SI prefixes and frequency relationships with quick conversions.
Rotational speed
Relate RPM to Hz (1 Hz = 60 RPM) for motors and turbines.
How to convert frequency units
- Select your “From” unit (e.g., Hz).
- Enter a value (e.g., 2,400).
- Select your “To” unit (e.g., kHz).
- See instant results and the 1 unit summary below.
- Use “Reset” to start again.
Tip: Change either side both fields update intelligently.
Supported units
Best practices
- Match units to the domain (audio in Hz/kHz, RF in MHz/GHz).
- Keep significant figures; round only at the end if you’ll do more math.
- Period relation: T = 1 / f. Wavelength (vacuum): λ = c / f, c ≈ 299,792,458 m/s.
- For digital sampling, respect the Nyquist limit: sample rate ≥ 2× highest frequency of interest.
Frequently Asked Questions
Is it private and secure?
Yes. Everything runs locally in your browser no uploads, no tracking, no servers.
Is it really free and unlimited?
Yes. Lifetime free, unlimited conversions, and no sign ups.
Which units are supported?
Hz, kHz, MHz, and GHz. More SI prefixes and RPM/BPM may be added.
Does it work offline?
Yes. Your browser can cache assets after the first visit and run offline.
How accurate are results?
We use precise constants and smart rounding for readability.
How do I convert frequency and period?
Use T = 1 / f. Example: 50 Hz → 0.02 s period.
Global availability (GEO)
Built for users worldwide: USA, UK, Canada, Australia, India, EU (Germany, France, Spain, Italy, Netherlands), Middle East (UAE, Saudi Arabia), Asia (Singapore, Malaysia, Philippines, Indonesia, Japan, South Korea), Africa (Nigeria, South Africa, Egypt), and Latin America (Brazil, Mexico, Argentina).
Also searched as: Frequency unit converter, convert Hz to kHz, kHz to Hz, MHz to GHz, GHz to MHz, frequency calculator, frequency to period, wavelength to frequency, audio frequency converter, RF frequency converter, signal frequency converter.
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