Aviation Frequency Converter: Hz, kHz, MHz, GHz
Convert aviation radio, radar, and navigation frequencies instantly across Hz, kHz, MHz, and GHz.
Aviation Frequency Converter
How to Convert Aviation Frequencies
Aviation communication, navigation, and surveillance systems operate across different radio frequency bands. This converter allows instant translation between the four standard metric units of frequency:
- Hertz (Hz): Basic unit of frequency (1 cycle per second).
- Kilohertz (kHz): Thousands of cycles per second (1 kHz = 1,000 Hz).
- Megahertz (MHz): Millions of cycles per second (1 MHz = 1,000 kHz).
- Gigahertz (GHz): Billions of cycles per second (1 GHz = 1,000 MHz).
Aviation Frequency Bands & Allocations
Aviation electronics (avionics) utilize specific frequency bands regulated by the International Civil Aviation Organization (ICAO).
| Band Name | Frequency Range | Primary Aviation Use |
| Low / Medium Frequency (LF/MF) | 190 kHz – 535 kHz | Non-Directional Beacons (NDB) for legacy AM navigation. |
| High Frequency (HF) | 2.8 MHz – 30 MHz | Long-range oceanic, polar, and intercontinental voice communications. |
| Very High Frequency (VHF) | 108.000 MHz – 136.975 MHz | Civilian Line-of-sight Air Traffic Control (ATC) voice and VOR/ILS navigation. |
| Ultra High Frequency (UHF) | 300 MHz – 3 GHz | Military ATC, Glide Path (ILS), DME, Transponders, and ADS-B traffic systems. |
| Super High Frequency (SHF) | 3 GHz – 30 GHz | Airborne Weather Radar, Radio Altimeters, and Satellite Communications (SatCom). |
VHF Airband Allocation Breakdown (108.0 – 137.0 MHz)
- 108.000 – 111.975 MHz: Instrument Landing System (ILS) Localizers and Terminal VOR navigation aids.
- 112.000 – 117.950 MHz: Standard VOR Navigation Beacons.
- 118.000 – 136.975 MHz: Civilian Air Traffic Control (ATC) voice channels using Amplitude Modulation (AM).
Critical Aviation Frequencies Reference
Common reference frequencies used globally across aviation operations:
- 121.500 MHz (121,500 kHz): International Civilian Air Emergency / Distress frequency (Guard).
- 123.450 MHz: Air-to-air communication channel between aircraft in flight.
- 243.000 MHz: Military emergency / Joint Guard frequency.
- 1030 MHz (1.03 GHz): Secondary Surveillance Radar (SSR) ground station interrogation frequency.
- 1090 MHz (1.09 GHz): Mode S Transponder reply and ADS-B Out broadcast frequency.
- 4.2 – 4.4 GHz: Radio Altimeter band for absolute radar altitude measurements above terrain.
Complete Frequency Conversion Formulas
Hertz (Hz) Conversions
- Hz to kHz: Kilohertz = Hz / 1,000
- Hz to MHz: Megahertz = Hz / 1,000,000
- Hz to GHz: Gigahertz = Hz / 1,000,000,000
Kilohertz (kHz) Conversions
- kHz to Hz: Hertz = kHz × 1,000
- kHz to MHz: Megahertz = kHz / 1,000
- kHz to GHz: Gigahertz = kHz / 1,000,000
Megahertz (MHz) Conversions
- MHz to Hz: Hertz = MHz × 1,000,000
- MHz to kHz: Kilohertz = MHz × 1,000
- MHz to GHz: Gigahertz = MHz / 1,000
Gigahertz (GHz) Conversions
- GHz to Hz: Hertz = GHz × 1,000,000,000
- GHz to kHz: Kilohertz = GHz × 1,000,000
- GHz to MHz: Megahertz = GHz × 1,000
Frequency Units Quick Reference Matrix
| From Unit | To Hz | To kHz | To MHz | To GHz |
| 1 Hz | 1 | 0.001 | 0.000001 | 0.000000001 |
| 1 kHz | 1,000 | 1 | 0.001 | 0.000001 |
| 1 MHz | 1,000,000 | 1,000 | 1 | 0.001 |
| 1 GHz | 1,000,000,000 | 1,000,000 | 1,000 | 1 |