🦉 UnitOwl

Megahertz to Gigahertz

1 Megahertz (MHz) = 0.001Gigahertz (GHz)

By KAMP Inc. / UnitOwl · Last reviewed:

Result
0.001 GHz
1 MHz = 0.001 GHz
Ad Slot (horizontal)

How to Convert MHz to GHz?

One megahertz (MHz) equals 0.001 gigahertz (GHz). To convert MHz to GHz, divide the MHz value by 1,000. This conversion is essential for anyone working with computer processors, wireless communications, radio frequencies, and electronics. CPU clock speeds are commonly reported in GHz (e.g., "3.5 GHz processor"), while individual frequency bands, radio channels, and some components are specified in MHz. When your Wi-Fi router operates on a "5,800 MHz" channel, that is 5.8 GHz. When a processor runs at "4,200 MHz," that is 4.2 GHz. Understanding this conversion helps you compare specifications, troubleshoot wireless issues, and communicate technical details accurately across disciplines that may use either unit. This matters because the same system can be documented in different units depending on context. Consumer-facing labels often prefer GHz because the numbers are shorter, while channel plans, regulator documents, and component datasheets stay in MHz for finer resolution. That translation is especially useful in Wi-Fi, cellular, and processor tuning work where both notations appear on the same page. It also prevents simple but costly unit-label mistakes.

How to Convert Megahertz to Gigahertz

  1. Start with your frequency in megahertz (MHz).
  2. Divide the MHz value by 1,000 to get gigahertz (GHz).
  3. The result is your frequency in GHz.
  4. This is a standard metric prefix conversion: giga = 10⁹, mega = 10⁶.
  5. For example, 2,400 MHz = 2.4 GHz, 5,000 MHz = 5.0 GHz.

Real-World Examples

A DDR5 RAM module runs at 4,800 MHz. What is that in GHz?
4,800 / 1,000 = 4.8 GHz. High-end DDR5 can reach 6,400 MHz (6.4 GHz) or more.
Your Wi-Fi operates on a 5,180 MHz channel. Express that in GHz.
5,180 / 1,000 = 5.18 GHz. This is in the 5 GHz Wi-Fi band.
A CPU base clock is 3,600 MHz. What is the GHz specification?
3,600 / 1,000 = 3.6 GHz. Marketing materials would list this as "3.6 GHz base clock."
An FM radio station broadcasts at 101.5 MHz. What is that in GHz?
101.5 / 1,000 = 0.1015 GHz. FM radio operates at much lower frequencies than Wi-Fi or cellular.
5G mmWave spectrum allocation includes the 28,000 MHz band.
28,000 / 1,000 = 28 GHz. Millimeter-wave 5G operates at extremely high frequencies.

Quick Reference

Megahertz (MHz)Gigahertz (GHz)
10.001
20.002
30.003
50.005
100.01
150.015
200.02
250.025
500.05
750.075
1000.1
2500.25
5000.5
1,0001

History of Megahertz and Gigahertz

The hertz was named after Heinrich Hertz, who first demonstrated the existence of electromagnetic waves in 1887. As electronics advanced through the 20th century, frequencies increased from kilohertz (early radio) to megahertz (FM radio, early computers) to gigahertz (modern processors, cellular networks). The transition from MHz to GHz in consumer electronics occurred in the early 2000s when Intel and AMD produced the first consumer processors exceeding 1,000 MHz (1 GHz). The "GHz race" that followed made GHz a household term for computing speed, though raw clock speed is only one factor in processor performance.

Common Mistakes to Avoid

  • Multiplying by 1,000 instead of dividing. This converts GHz to MHz (the opposite direction). If your result is much larger than the MHz value, you went the wrong way.
  • Confusing MHz and GHz in wireless specifications. A "5 GHz Wi-Fi" router operates at 5,000 MHz, while "5 MHz bandwidth" refers to the width of a channel, not its center frequency. Frequency and bandwidth are different concepts.
  • Assuming higher GHz always means better performance. In computing, a 3.5 GHz processor with modern architecture can outperform a 5.0 GHz processor with older architecture. In wireless, higher GHz frequencies offer more bandwidth but shorter range.
  • Moving the decimal point the wrong number of places. MHz to GHz always shifts three places left, so 5,180 MHz is 5.18 GHz, not 51.8 GHz or 0.518 GHz.
Ad Slot (auto)

Frequently Asked Questions

Why do some specs use MHz and others use GHz?
Convention varies by field. CPU speeds are usually in GHz because values are typically 1-6. RAM speeds are often in MHz because values are typically 2,400-8,000. Wi-Fi uses both: "2.4 GHz band" but "channel 36 at 5,180 MHz." The choice is usually whichever gives the most readable number.
What is the difference between 2.4 GHz and 5 GHz Wi-Fi?
2.4 GHz (2,400 MHz) Wi-Fi has longer range and better wall penetration but lower maximum speed and more congestion. 5 GHz (5,000 MHz) Wi-Fi offers higher speeds and less interference but shorter range. Wi-Fi 6E adds 6 GHz (6,000 MHz) for even more bandwidth.
Does CPU GHz directly indicate speed?
Not by itself. GHz measures clock cycles per second. A 4 GHz processor completes 4 billion cycles per second. But different architectures accomplish different amounts of work per cycle (IPC — instructions per clock). A modern 3.5 GHz chip often outperforms an older 5 GHz chip.
What are common frequency ranges in GHz and MHz?
FM radio: 88-108 MHz. Wi-Fi: 2,400 MHz (2.4 GHz) and 5,000-5,800 MHz (5-5.8 GHz). 4G LTE: 600-2,500 MHz. 5G sub-6: 3,300-4,200 MHz (3.3-4.2 GHz). 5G mmWave: 24,000-40,000 MHz (24-40 GHz). CPUs: 2,000-6,000 MHz (2-6 GHz).
How many GHz is 2,400 MHz?
2,400 MHz equals 2.4 GHz. That is the standard nominal Wi-Fi band written in the shorter GHz form used in consumer networking.
Quick Tip

The easiest way to convert: just move the decimal point three places to the left. 2,400 MHz becomes 2.4 GHz. 5,800 MHz becomes 5.8 GHz. 28,000 MHz becomes 28.0 GHz. This works because the giga prefix is exactly 1,000 times the mega prefix.

Sources & References