This converter turns megabits into gigabytes instantly, using the exact factor 1 megabit = 0.000125 gigabytes. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
One million bits — how internet speeds are advertised. One billion bytes — how storage and mobile data are sold.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
megabits- The amount you are converting, measured in megabits
0.000125- The exact number of gigabytes in one megabit
gigabytes- The converted result
How it works, step by step
- Enter the number of megabits you want to convert.
- The value is multiplied by 0.000125, the exact conversion factor.
- The result is displayed in gigabytes, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 megabits
Multiply 5 by 0.000125. That gives 0.000625 gigabytes. A quick sanity check: one megabit is smaller than one gigabyte, so the number should get smaller — and it does.
Converting 72 megabits
72 × 0.000125 = 0.009 gigabytes. Working backwards, 0.009 ÷ 0.000125 returns 72 megabits, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many gigabytes are in one megabit?
Exactly 0.000125. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert megabits to gigabytes?
Gigabytes = megabits × 0.000125. To reverse it, divide instead: megabits = gigabytes ÷ 0.000125, which is the same as multiplying by 8000.
Is the megabit bigger than the gigabyte?
No. One megabit is only 0.000125 of a gigabyte, so the gigabyte is the larger unit.
Why does my answer differ slightly from other megabits to gigabytes converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a megabit?
One million bits — how internet speeds are advertised.
What is a gigabyte?
One billion bytes — how storage and mobile data are sold.
Megabits to gigabytes reference table
| Megabits | Gigabytes |
|---|---|
| 0.5 Mb | 0.000063 GB |
| 1 Mb | 0.000125 GB |
| 2 Mb | 0.00025 GB |
| 3 Mb | 0.000375 GB |
| 5 Mb | 0.000625 GB |
| 10 Mb | 0.00125 GB |
| 15 Mb | 0.001875 GB |
| 20 Mb | 0.0025 GB |
| 25 Mb | 0.003125 GB |
| 50 Mb | 0.00625 GB |
| 75 Mb | 0.009375 GB |
| 100 Mb | 0.0125 GB |
| 250 Mb | 0.03125 GB |
| 500 Mb | 0.0625 GB |
| 1000 Mb | 0.125 GB |
Exact factor: 1 megabit = 0.000125 gigabytes. Values rounded for display.