What is Frequency Converter?

A frequency converter translates values between Hertz, kilohertz, megahertz, gigahertz, and related units. Useful for electronics, radio, audio engineering, and signal processing. Enter a frequency in any unit and see all equivalents instantly.

Switching between µHz, mHz, Hz, kHz, MHz, GHz, THz and rotational or cyclic rates like RPM, RPS, rad/s, °/s, FPS, BPM, cpm and cph is constant work for anyone touching radio, audio, lab equipment, motor specs, robotics, or music production. This converter shows every unit side by side, so you don't lose track of the decimal place when a datasheet lists oscillator speed in MHz and your firmware wants Hz, when a servo spec is in degrees per second, or when a DJ set calls for tempo in BPM. Enter any frequency and you also get its period (T = 1/f) and vacuum wavelength (λ = c/f) without a second tool.

How to use

1. Enter a numeric frequency value.
2. Select the source unit — Hz, kHz, MHz, GHz and the rest, plus rotational units (RPM, RPS, rad/s, °/s) and cyclic ones (BPM, FPS, cpm, cph).
3. View all converted values at once and copy any result you need.

When to use

• Reading a radio datasheet that mixes MHz, kHz, and Hz across channel, IF, and sample rate.
• Setting a CPU clock or PWM register in Hz when the spec sheet shows MHz.
• Converting motor RPM to angular velocity (rad/s) for torque calculations.

Result

Enter 2.4 GHz (a common Wi-Fi frequency) to see it equals 2,400 MHz, 2,400,000 kHz, or 2,400,000,000 Hz.

FAQ

Why does my converted value show as exponential notation?

Once a number passes about 10^15 or falls below 10^-6, regular decimal notation becomes unreadable. The converter switches to scientific notation at that point so you don't miscount zeros in something like 2.4 GHz expressed as Hz.

How is RPM converted to Hz?

One revolution per minute equals 1/60 Hz, so 3600 RPM is 60 Hz. The conversion treats one revolution as a full cycle, which matches how tachometers and motor controllers report speed.

What's the difference between Hz and rad/s?

Hz counts full cycles per second. Rad/s counts radians of phase per second, and one full cycle is 2 pi radians. So 1 Hz equals about 6.283 rad/s. Control theory and signal processing usually prefer rad/s.

Is GHz the same as gigacycles per second?

Yes. Old datasheets sometimes use cps (cycles per second) or Gc/s; the SI unit Hertz replaced them in 1960. A 2.4 GHz Wi-Fi signal and a 2.4 Gc/s signal mean the same thing.

Can I use this for audio frequencies?

Yes. Audible sound sits roughly between 20 Hz and 20 kHz, so type a guitar tuning pitch like 440 in Hz and the kHz field shows 0.44. Ultrasound and subsonic ranges are also on the spectrum guide below the converter.

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