〰️ Frequency Converter

Convert frequency units — hertz, kilohertz, megahertz, gigahertz, revolutions per minute (RPM) and radians per second. 1 Hz = 60 RPM = 2π rad/s.

From

1 Hz = 0.001 kHz

Precision

1 hertz = 0.001 kilohertz

1 × 0.001 = 0.001

1 Hz equals 0.001 kHz, so multiplying by 0.001 converts the value. The result describes the exact same quantity — only the measuring stick changes.

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Popular frequency conversions

Unit	Symbol	Definition
Hertz	Hz	One hertz is one cycle per second — the SI unit of frequency. Mains power is 50 or 60 Hz; audible sound spans roughly 20 Hz to 20 kHz.
Kilohertz	kHz	A kilohertz is 1,000 Hz. AM radio and audio sample-rate components sit in the kHz range (CD audio samples at 44.1 kHz).
Megahertz	MHz	A megahertz is 1,000,000 Hz. FM radio, older CPU clocks and RF bands are quoted in MHz.
Gigahertz	GHz	A gigahertz is 1,000 MHz — the clock speed of modern processors and the band of Wi-Fi (2.4/5 GHz) and mobile networks.
Revolution per minute	RPM	One revolution per minute is 1/60 Hz. Engine and motor speeds are given in RPM; 3,000 RPM is 50 Hz.
Radian per second	rad/s	Angular frequency: one radian per second is 1/(2π) Hz. A full turn is 2π radians, so 1 Hz = 2π ≈ 6.283 rad/s.
Beat per minute	BPM	One beat per minute is 1/60 Hz — the musical and heart-rate unit. 120 BPM is exactly 2 Hz.