How Do You Convert kHz to GHz?
Divide kilohertz by 1,000,000 (one million) to get gigahertz. The formula is: GHz = kHz / 1,000,000. Move the decimal point six places to the left.
Coach Rivera uses a handheld radio during track meets that operates at 462,562.5 kHz. Dividing by one million: 462,562.5 / 1,000,000 = 0.4625625 GHz. This is a standard FRS (Family Radio Service) channel. The radio manual lists the frequency in kHz, but Coach Rivera confirms it falls in the UHF band around 0.46 GHz, well below WiFi frequencies.
kHz to GHz Reference Table
| kHz | GHz | MHz | Common Use |
|---|---|---|---|
| 88,000 kHz | 0.088 GHz | 88 MHz | FM radio low end |
| 433,000 kHz | 0.433 GHz | 433 MHz | Wireless remotes |
| 462,000 kHz | 0.462 GHz | 462 MHz | FRS walkie-talkies |
| 900,000 kHz | 0.9 GHz | 900 MHz | Cellular band |
| 1,575,420 kHz | 1.57542 GHz | 1,575.42 MHz | GPS L1 signal |
| 2,400,000 kHz | 2.4 GHz | 2,400 MHz | WiFi / Bluetooth |
| 5,000,000 kHz | 5.0 GHz | 5,000 MHz | WiFi 5 GHz band |
| 28,000,000 kHz | 28.0 GHz | 28,000 MHz | 5G mmWave |
Practical Applications
Legacy Equipment Documentation
Marco Ferreira upgrades the wireless ordering system at his restaurant. The old system manual lists the operating frequency as 868,000 kHz. He needs to verify compatibility with his new router: 868,000 / 1,000,000 = 0.868 GHz (868 MHz). This is a European ISM band, not compatible with North American systems. He orders US-compliant devices operating at 915,000 kHz (0.915 GHz) instead.
Drone Frequency Coordination
Sam Reeves uses a drone for aerial real estate photography. His video transmitter operates at 5,785,000 kHz. Converting: 5,785,000 / 1,000,000 = 5.785 GHz. He checks that this falls within the legal 5.725-5.850 GHz ISM band. Before flying near the airport, he verifies the drone frequency will not interfere with nearby 5G towers operating at 3,500,000 kHz (3.5 GHz), which is a completely different band.
Scientific Instrument Calibration
Leah Park sends her bakery thermometer for calibration. The infrared sensor operates in the terahertz range: the calibration report lists a reference frequency of 300,000,000 kHz. Converting: 300,000,000 / 1,000,000 = 300 GHz. This is the boundary between microwaves and far-infrared light. Understanding the frequency helps Leah appreciate why the sensor can measure oven surface temperatures without contact from several inches away.