MHz to GHz Converter
Use this MHz to GHz converter for instant bidirectional Megahertz ↔ Gigahertz conversion with IEEE radar-band classification (L/S/C/X/Ku/K/Ka/V/W), WiFi/5G/Bluetooth/GPS/CPU presets, wavelength calculation, and quarter-wave antenna length.
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IEEE Microwave & Radar Band Reference
| Band | Range (MHz) | Range (GHz) | Wavelength | Common Uses |
|---|---|---|---|---|
| HF — Shortwave | 3 – 30 | 0.003 – 0.03 | 10 – 100 m | Shortwave broadcast, ham radio, CB |
| VHF | 30 – 300 | 0.03 – 0.3 | 1 – 10 m | FM (88–108 MHz), TV ch 2–13, 2 m ham, NOAA weather |
| UHF | 300 – 1,000 | 0.3 – 1 | 30 cm – 1 m | UHF TV, 4G LTE (700–900 MHz), GSM 850/900 |
| L-band | 1,000 – 2,000 | 1 – 2 | 15 – 30 cm | GPS L1 (1,575 MHz), GSM 1800/1900, Iridium |
| S-band | 2,000 – 4,000 | 2 – 4 | 7.5 – 15 cm | WiFi 2.4 GHz, Bluetooth, microwave oven (2.45 GHz), 5G low-mid |
| C-band | 4,000 – 8,000 | 4 – 8 | 3.75 – 7.5 cm | WiFi 5 GHz, WiFi 6E, satellite TV uplink, weather radar |
| X-band | 8,000 – 12,000 | 8 – 12 | 2.5 – 3.75 cm | Military radar, weather radar, satellite communication |
| Ku-band | 12,000 – 18,000 | 12 – 18 | 1.67 – 2.5 cm | Direct broadcast satellite TV, VSAT, fixed satellite |
| K-band | 18,000 – 27,000 | 18 – 27 | 1.11 – 1.67 cm | Police radar (24 GHz), radio astronomy, atmospheric research |
| Ka-band | 27,000 – 40,000 | 27 – 40 | 7.5 – 11.1 mm | 5G mmWave (28/39 GHz), high-throughput satellite, automotive radar |
| V-band | 40,000 – 75,000 | 40 – 75 | 4 – 7.5 mm | 5G mmWave (60 GHz), oxygen-absorption short-range comms |
| W-band | 75,000 – 110,000 | 75 – 110 | 2.73 – 4 mm | Automotive radar (77 GHz), millimeter-wave imaging |
| Millimeter Wave (extended) | 110,000 – 300,000 | 110 – 300 | 1 – 2.73 mm | 6G research, security imaging, radio astronomy (sometimes informally called G-band or D-band) |
| Submillimeter / Far-IR | 300,000+ | 300+ | < 1 mm | Terahertz spectroscopy, far-infrared astronomy |
About MHz, GHz & Microwave Bands
One gigahertz (GHz) equals 1,000 megahertz or 1,000,000,000 Hz. The conversion between MHz and GHz is a decimal shift by three places — divide MHz by 1,000 to get GHz, or multiply GHz by 1,000 to get MHz. Whether you need a quick GHz to MHz result or a WiFi frequency converter for checking channel assignments, the bidirectional tool above handles both directions instantly. For complete coverage of the audio range below these frequencies, see the Hz to kHz converter and the kHz to MHz converter.
Why GHz dominates modern wireless
Almost everything wireless built in the last two decades operates at GHz frequencies: WiFi (2.4 / 5 / 6 GHz), Bluetooth (2.4 GHz), cellular 4G/5G (0.6–6 GHz sub-6, plus 24–86 GHz mmWave), GPS L1 at 1,575.42 MHz (1.57542 GHz), and direct-broadcast satellite TV near 12 GHz. Higher frequencies allow wider channel bandwidth and faster data rates but have shorter range and don't penetrate walls or rain as well — the key engineering tradeoff between spectrum efficiency and coverage.
IEEE radar/microwave bands
IEEE Standard 521 defines lettered bands across the microwave spectrum — L, S, C, X, Ku, K, Ka, V, W. These names come from WWII-era radar engineering and remain the lingua franca for satellite, radar, and 5G work. This tool doubles as a microwave band calculator: enter any frequency and the band badge tells you which IEEE designation applies. A "C-band satellite dish" is one that operates around 4–8 GHz; "Ka-band 5G" means 27–40 GHz cellular service. Radio astronomers also use these designations — for example, the hydrogen 21-cm line at 1,420.4 MHz sits in the L-band, a protected region of the spectrum.
FM radio, AM radio, and other MHz-range services
Not all familiar frequencies are in the GHz range. FM radio broadcasts from 87.5 to 108 MHz — fully in the VHF band and well below 1 GHz. The classic FM band center of 98 MHz equals just 0.098 GHz. AM broadcast radio runs from 520 to 1,700 kHz (0.52–1.7 MHz), and even the 2-meter ham radio band sits at 144–148 MHz. Use the wavelength calculator to find the antenna dimensions for any of these frequencies.
CPU clock speeds and GHz
Modern CPUs run at 1–6 GHz clock frequencies — the rate at which the processor cycles through instructions. A 3 GHz CPU completes 3 billion clock cycles per second. The unit is the same Hz used for radio, but the application is digital timing rather than electromagnetic wave propagation. Memory buses (DDR5 runs at 4,800–8,400 MT/s) and GPU shaders also express their speeds in MHz and GHz, making this conversion a practical tool for anyone benchmarking or overclocking hardware.
How to convert MHz to GHz: formula and worked example
The conversion formula is straightforward: GHz = MHz ÷ 1,000. Going the other direction: MHz = GHz × 1,000. The factor is exactly 1,000 because "giga" is 109 and "mega" is 106, a difference of 103.
Worked example — convert 2,400 MHz to GHz: 2,400 MHz ÷ 1,000 = 2.4 GHz. That is the center of the WiFi 2.4 GHz and Bluetooth S-band. Two common reference values worth memorising: 1,575.42 MHz = 1.57542 GHz (GPS L1 signal) and 5,180 MHz = 5.18 GHz (WiFi 5 GHz, channel 36). For the corresponding electromagnetic wavelengths of these frequencies, use the wavelength calculator; for conversions one step down the scale, see the Hz to kHz converter.