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Convert between megahertz (MHz) and gigahertz (GHz) for CPU speeds, wireless frequencies, and high-speed signals.
Megahertz to Gigahertz:
GHz = MHz ÷ 1000
Gigahertz to Megahertz:
MHz = GHz × 1000
| Megahertz (MHz) | Gigahertz (GHz) |
|---|---|
| 100 MHz | 0.1 GHz |
| 500 MHz | 0.5 GHz |
| 1,000 MHz | 1 GHz |
| 1,500 MHz | 1.5 GHz |
| 2,000 MHz | 2 GHz |
| 2,400 MHz | 2.4 GHz |
| 3,000 MHz | 3 GHz |
| 3,500 MHz | 3.5 GHz |
| 4,000 MHz | 4 GHz |
| 5,000 MHz | 5 GHz |
| 5,800 MHz | 5.8 GHz |
| 10,000 MHz | 10 GHz |
Megahertz (MHz) is a unit of frequency equal to one million hertz (cycles per second). It is commonly used to measure radio frequencies, computer clock speeds, and various electronic signals. FM radio broadcasts at 88-108 MHz, WiFi operates at 2,400 MHz and 5,000 MHz, and older computer processors had speeds measured in hundreds of megahertz. The prefix "mega" means million, so 1 MHz represents one million complete cycles occurring every second.
Gigahertz (GHz) is a unit of frequency equal to one billion hertz or 1,000 megahertz. The prefix "giga" means billion, making gigahertz the standard unit for very high frequencies. Modern computer processors operate at speeds measured in gigahertz (typically 2-5 GHz), WiFi uses 2.4 GHz and 5 GHz bands, and 5G cellular networks operate at frequencies up to 39 GHz and beyond. Gigahertz represents an extremely rapid rate of oscillation - billions of cycles per second.
Converting megahertz to gigahertz requires dividing by 1,000:
Example: Convert 3,500 MHz to GHz
3,500 MHz ÷ 1,000 = 3.5 GHz
There are exactly 1,000 megahertz in one gigahertz. The prefix "giga" means one billion (10^9), and "mega" means one million (10^6), so 1 GHz = 1,000 MHz = 1,000,000 kHz = 1,000,000,000 Hz.
Not necessarily. While clock speed (measured in GHz) is important, modern processor performance also depends on core count, architecture efficiency, cache size, and instruction set. A 3.5 GHz processor with newer architecture may outperform a 4.0 GHz processor with older technology. Other factors like multi-core performance and power efficiency are equally important.
2.4 GHz WiFi (2,400 MHz) has better range and penetrates walls more effectively, but is slower and more crowded with interference from other devices. 5 GHz WiFi (5,000 MHz) offers faster speeds and less interference but has shorter range and less wall penetration. Many modern routers offer dual-band, supporting both frequencies simultaneously.
Processor clock speeds plateaued around 3-5 GHz due to power consumption and heat generation increasing exponentially with frequency. Higher frequencies require more voltage, which generates more heat and uses more power. Instead of increasing GHz, modern processors improve performance through multiple cores, better architecture, and increased efficiency.
Millimeter wave (mmWave) 5G operates at very high frequencies, typically 24-39 GHz (24,000-39,000 MHz) and beyond. These frequencies offer extremely high data speeds but have very limited range and cannot penetrate buildings well. They're primarily used in dense urban areas where many small cell towers can be deployed.
Satellites use various frequency bands measured in gigahertz. C-band (4-8 GHz) offers good all-weather performance for television and data. Ku-band (12-18 GHz) is used for direct-broadcast satellite TV and VSAT. Ka-band (26.5-40 GHz) provides high-bandwidth internet services. Higher frequencies allow more data but require more precise antenna alignment.