How Do You Convert kHz to MHz?
Divide kilohertz by 1,000 to get megahertz. The formula is: MHz = kHz / 1,000. Move the decimal point three places to the left.
Tom Brewer tunes his shortwave radio to the BBC World Service at 9,410 kHz. Converting: 9,410 / 1,000 = 9.41 MHz. This is in the 31-meter shortwave band (9,400-9,900 kHz = 9.4-9.9 MHz). He logs reception reports using both kHz (common in shortwave) and MHz formats.
Radio Band Reference
| Band Name | kHz Range | MHz Range |
|---|---|---|
| LF (Low Frequency) | 30-300 kHz | 0.03-0.3 MHz |
| MF (Medium: AM Radio) | 300-3,000 kHz | 0.3-3 MHz |
| HF (Shortwave) | 3,000-30,000 kHz | 3-30 MHz |
| VHF (FM Radio/TV) | 30,000-300,000 kHz | 30-300 MHz |
| UHF (TV/Cell) | 300,000-3,000,000 kHz | 300-3,000 MHz |
Practical Applications
Amateur Radio
Tom Brewer operates on the 40-meter amateur band: 7,000-7,300 kHz = 7.0-7.3 MHz. For voice contacts he tunes to 7,175 kHz (7.175 MHz). His radio display shows kHz, but band plans and contest rules reference MHz. He converts fluently between both for logging contacts.
Ultrasonic Cleaning
Dana Kowalski uses an ultrasonic cleaner for construction tools. The unit operates at 40 kHz (0.04 MHz). Higher-frequency cleaners at 80 kHz (0.08 MHz) produce finer cavitation bubbles for delicate parts. She chose the 40 kHz model because it provides more aggressive cleaning action for greasy machine parts.
Digital Signal Processing
Maya Singh programs a digital filter in her engineering class. The system samples at 48 kHz (0.048 MHz). By the Nyquist theorem, it can process signals up to 24 kHz (0.024 MHz). She designs a low-pass filter with a cutoff at 20 kHz (0.02 MHz) to remove ultrasonic noise while preserving all audible frequencies.