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Convert between kilohertz (kHz) and megahertz (MHz) instantly for radio, wireless, and signal applications.
Kilohertz to Megahertz:
MHz = kHz ÷ 1000
Megahertz to Kilohertz:
kHz = MHz × 1000
| Kilohertz (kHz) | Megahertz (MHz) |
|---|---|
| 1 kHz | 0.001 MHz |
| 10 kHz | 0.01 MHz |
| 50 kHz | 0.05 MHz |
| 100 kHz | 0.1 MHz |
| 500 kHz | 0.5 MHz |
| 1,000 kHz | 1 MHz |
| 5,000 kHz | 5 MHz |
| 10,000 kHz | 10 MHz |
| 50,000 kHz | 50 MHz |
| 100,000 kHz | 100 MHz |
| 500,000 kHz | 500 MHz |
| 1,000,000 kHz | 1000 MHz |
Kilohertz (kHz) is a unit of frequency equal to 1,000 hertz. It is commonly used to measure frequencies in the range of thousands of cycles per second. Kilohertz is widely used in radio broadcasting, especially for AM radio stations, audio engineering for sample rates, and describing the frequency ranges of various electronic signals. The AM radio band, for example, spans from approximately 530 kHz to 1,700 kHz in most countries.
Megahertz (MHz) is a unit of frequency equal to one million hertz or 1,000 kilohertz. The prefix "mega" means million, making megahertz the appropriate unit for high-frequency signals. Megahertz is extensively used in radio communications (FM radio operates at 88-108 MHz), computer processor speeds, WiFi frequencies (2.4 GHz = 2,400 MHz), television broadcasting, and many wireless communication systems. Modern applications often use gigahertz (GHz) for even higher frequencies.
Converting kilohertz to megahertz is simple - divide the kilohertz value by 1,000:
Example: Convert 5,000 kHz to MHz
5,000 kHz ÷ 1,000 = 5 MHz
There are exactly 1,000 kilohertz in one megahertz. The prefix "mega" means one million, and "kilo" means one thousand, so 1 MHz = 1,000 kHz = 1,000,000 Hz.
FM radio broadcasts in the VHF (Very High Frequency) band from 88 to 108 MHz. In kilohertz, this is 88,000 to 108,000 kHz. FM radio stations are typically spaced 200 kHz (0.2 MHz) apart, such as 88.1, 88.3, 88.5 MHz, etc.
As processors became faster, measuring speeds in megahertz became impractical due to large numbers. Modern processors run at speeds over 1,000 MHz, so gigahertz (GHz) became the standard unit. For example, a 3.5 GHz processor is 3,500 MHz or 3,500,000 kHz. The transition to GHz occurred in the early 2000s.
AM radio operates at lower frequencies (530-1,700 kHz or 0.53-1.7 MHz), while FM radio operates at higher frequencies (88-108 MHz or 88,000-108,000 kHz). The higher frequency allows FM to carry higher quality audio with less interference, but has a shorter range than AM.
Most wireless communications use frequencies measured in megahertz or gigahertz. Cell phones use bands from 700 MHz to 2,600 MHz (and higher for 5G). WiFi uses 2,400 MHz (2.4 GHz) and 5,000 MHz (5 GHz). Bluetooth operates around 2,400 MHz. Higher frequencies generally allow more data transmission but have shorter range.
Radio frequencies are a limited natural resource, so governments regulate their use to prevent interference and ensure fair access. Different bands are allocated for specific purposes: broadcasting, aviation, maritime, cellular, amateur radio, etc. Organizations like the FCC (USA) and ITU (international) manage these allocations.