Frequency Converter

Convert between different frequency units including Hz, kHz, MHz, GHz, and more.

From

1 kHz = 1,000 Hz

1 MHz = 1,000 kHz = 1,000,000 Hz

1 GHz = 1,000 MHz = 1,000,000,000 Hz

1 THz = 1,000 GHz = 10¹² Hz

1 RPM = 1/60 Hz ≈ 0.0167 Hz

1 RPS = 1 Hz

1 rad/s = 1/(2π) Hz ≈ 0.159 Hz

Angular frequency: ω = 2πf

Audio Range: 20 Hz - 20 kHz (human hearing)

Radio Waves: 3 kHz - 300 GHz

AM Radio: 535 - 1605 kHz

FM Radio: 88 - 108 MHz

WiFi 2.4GHz: 2.4 - 2.485 GHz

WiFi 5GHz: 5.15 - 5.85 GHz

Microwave: 300 MHz - 300 GHz

Visible Light: ~400 - 800 THz

CPU Clock: 1-5 GHz (modern processors)

AC Power: 50-60 Hz (mains electricity)

Musical Note A4: 440 Hz (concert pitch)

Ultrasound: >20 kHz (medical imaging)

Radar: 1-100 GHz (various bands)

X-rays: 30 PHz - 30 EHz (10¹⁶-10¹⁹ Hz)

• Period (T) and frequency (f) are reciprocals: T = 1/f

• Higher frequency = shorter wavelength (for electromagnetic waves)

• Angular frequency (ω) = 2π × frequency (f)

• Use scientific notation for very large or small frequencies