Kilohertz (kHz) and hertz (Hz) are fundamental units for measuring frequency, with 1 kilohertz equating to 1,000 hertz. This means that a frequency of 5 kHz is equal to 5,000 Hz. To convert kilohertz to hertz, multiply the number of kilohertz by 1,000. Conversely, to convert hertz to kilohertz, divide the number of hertz by 1,000. These conversions are essential in fields like electronics and audio engineering, where precise frequency measurements are crucial. For instance, the standard tuning pitch for musical instruments is 440 Hz, which is equivalent to 0.44 kHz. Understanding the relationship between kilohertz and hertz ensures accurate frequency analysis and application.