Frequency counts cycles per second; the SI unit is the hertz (Hz). Bigger units step up by a thousand — kHz, MHz, GHz, THz — while rotational speed uses RPM (÷ 60 for hertz) and angular frequency uses radians per second (× 2π from hertz). This converter rebases any value through hertz so you can move between every common frequency unit.
Reviewed: June 20, 2026 · Author: Naveen P N, Founder — AI Calculator · Verified against: SI definitions (RPM/60, 2π rad/cycle), recomputed in code.
How the conversion works
Each unit has a factor in hertz: kHz = 1,000, MHz = 1,000,000, GHz = 1e9, THz = 1e12, RPM = 1/60, and rad/s = 1/(2π). Multiply by the from-factor to land in hertz, then divide by the to-factor for the unit you want. The thousand-step ladder (Hz → kHz → MHz → GHz) is why a CPU at 3.5 GHz is 3,500 MHz.
Worked examples
2.4 GHz Wi-Fi to hertz:
A 60 RPM turntable to hertz:
1 Hz to radians per second:
So a 2.4 GHz radio is 2.4 billion Hz, a 60 RPM record spins at 1 Hz (one turn per second), and 1 Hz is about 6.28 rad/s in angular terms.
Frequently Asked Questions
×1,000 each step. 1 MHz = 1,000 kHz = 1,000,000 Hz. 2.4 GHz = 2,400,000,000 Hz.
÷ 60. 60 RPM = 1 Hz, 3,000 RPM = 50 Hz. To reverse, × 60.
Angular frequency. 1 Hz = 2π rad/s ≈ 6.2832; 1 rad/s ≈ 0.159155 Hz.
No — wavelength = speed ÷ frequency needs the wave speed. Use a wavelength calculator.
It's 2.4 billion cycles/sec — good range and wall penetration. That's 2,400 MHz.