kHz to Hz Converter
Enter a value to instantly convert between frequency units.
1 Kilohertz = 1000 Hertz
Key Formulas
Hertz → Kilohertz
kHz = Hz × 0.001Kilohertz → Hertz
Hz = kHz × 1000Megahertz → Gigahertz
GHz = MHz × 0.001Gigahertz → Megahertz
MHz = GHz × 1000Formula
Hz = kHz × 1000Audio software, RF libraries, and hardware timer registers often demand frequencies in raw hertz even when the spec sheet or user interface shows kilohertz. A 48 kHz recording session becomes 48,000 Hz when you need to set a microcontroller's sample rate register. A 100 kHz power converter switching frequency becomes 100,000 Hz in the oscilloscope's measurement readout. Multiplying by 1,000 bridges the two notations without any change to the underlying signal.
Source: NIST SP 811, Table B.8
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Frequently Asked Questions
Real-World Examples
CD audio sample rate. DAW software shows 44.1 kHz in the project settings, but an audio driver API expects 44,100 Hz as the sample rate parameter.
44.1 kHz = 44100 Hz
Upper limit of human hearing at 20 kHz. Headphone frequency response curves and speaker spec sheets sometimes express this boundary in Hz for waveform calculations.
20 kHz = 20000 Hz
Ultrasonic transducer for distance measurement. An Arduino library for the HC-SR04 sensor works in Hz internally, so 40 kHz becomes 40,000 Hz in code.
100 kHz = 100000 Hz
AM radio station at 1,080 kHz. When entering the frequency into spectrum analysis software that expects Hz, the correct value is 1,080,000 Hz.
1080 kHz = 1080000 Hz