How many megahertz are in one gigahertz?

There are 1,000 megahertz in 1 gigahertz.

How do you convert megahertz to gigahertz?

Multiply the number of megahertz by 0.001 — or use the formula GHz = MHz ÷ 1,000.

What is 6 megahertz in gigahertz?

6 megahertz is 0.006 gigahertz. 6 ÷ 1,000 = 0.006 gigahertz.

Is the megahertz to gigahertz conversion exact?

Yes. The relationship is fixed by definition, so 0.001 is an exact conversion factor — only the displayed result is rounded.

Megahertz to Gigahertz Converter

Convert megahertz to gigahertz instantly with this free megahertz to gigahertz converter. Enter any value to get an accurate frequency conversion, plus the formula, the conversion factor and a full reference table.

What is 1 megahertz in gigahertz?

1 megahertz is equal to exactly 0.001 gigahertz.

1 ÷ 1,000 = 0.001 gigahertz

Amount

Result0.001

1 megahertz = 0.001 gigahertz

Megahertz to Gigahertz formula

GHz = MHz ÷ 1,000

The megahertz to gigahertz conversion factor is 0.001, which is exact by definition. 1 megahertz = 0.001 gigahertz, and 1 gigahertz = 1,000 megahertz.

Worked examples

2 megahertz = 0.002 gigahertz — 2 ÷ 1,000 = 0.002 gigahertz
6 megahertz = 0.006 gigahertz — 6 ÷ 1,000 = 0.006 gigahertz
10 megahertz = 0.01 gigahertz — 10 ÷ 1,000 = 0.01 gigahertz

Megahertz to Gigahertz conversion table

Every value below is calculated with the exact conversion factor and rounded for display.

megahertz to gigahertz conversion table
Megahertz (MHz)	Gigahertz (GHz)
1 MHz	0.001 GHz
2 MHz	0.002 GHz
3 MHz	0.003 GHz
4 MHz	0.004 GHz
5 MHz	0.005 GHz
6 MHz	0.006 GHz
7 MHz	0.007 GHz
8 MHz	0.008 GHz
9 MHz	0.009 GHz
10 MHz	0.01 GHz
12 MHz	0.012 GHz
15 MHz	0.015 GHz
20 MHz	0.02 GHz
25 MHz	0.025 GHz
30 MHz	0.03 GHz
50 MHz	0.05 GHz
75 MHz	0.075 GHz
100 MHz	0.1 GHz
500 MHz	0.5 GHz
1,000 MHz	1 GHz

When you need to convert megahertz to gigahertz

Comparing specifications written for a different market.
Checking a figure quoted in an unfamiliar unit before acting on it.
Converting values consistently across a spreadsheet, report or shopping list.

Common mistakes to avoid

Dividing when you should multiply. Because 1 megahertz = 0.001 gigahertz, the answer should be smaller than the number you started with.
Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.

How precise does the answer need to be?

Round only at the end, and only to the precision your task actually needs. The converter above keeps full double precision internally and rounds for display.

How these units are defined

Megahertz (MHz): One million cycles per second. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Gigahertz (GHz): One billion cycles per second; CPU and radio frequencies. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.

Frequently asked questions

What is 1 megahertz in gigahertz?: 1 megahertz is equal to 0.001 gigahertz.
How many megahertz are in one gigahertz?: There are 1,000 megahertz in 1 gigahertz.
How do you convert megahertz to gigahertz?: Multiply the number of megahertz by 0.001 — or use the formula GHz = MHz ÷ 1,000.
What is 6 megahertz in gigahertz?: 6 megahertz is 0.006 gigahertz. 6 ÷ 1,000 = 0.006 gigahertz.
Is the megahertz to gigahertz conversion exact?: Yes. The relationship is fixed by definition, so 0.001 is an exact conversion factor — only the displayed result is rounded.