Megabytes to Gigabits
An instant megabytes-to-gigabits converter, with the formula and a reference table below.
| Megabytes | Gigabits |
|---|---|
| 1 MB | 0.008 Gb |
| 2 MB | 0.016 Gb |
| 3 MB | 0.024 Gb |
| 5 MB | 0.04 Gb |
| 10 MB | 0.08 Gb |
| 25 MB | 0.2 Gb |
| 50 MB | 0.4 Gb |
| 100 MB | 0.8 Gb |
How to use
- Enter a value in the Megabytes field.
- The Gigabits figure appears immediately — no button to press.
- Typing in the Gigabits field converts back to Megabytes the same way.
- Use the reference table for the values that come up most often.
Megabytes to Gigabits formula
Converting megabytes to gigabits is a single multiplication by 0.008.
Gb = MB × 0.008
Put another way, one megabyte is exactly 1/125 of a gigabit.
Why this factor: the megabyte and the gigabit are both defined against the byte, so dividing one definition by the other gives 0.008 directly. Both definitions are set out in full below.
To go the other way, divide by 0.008 — or use the Gigabits to Megabytes converter, which is the same calculation reversed.
Worked example
Take 500 MB and multiply by the factor 0.008: the result is 4 Gb.
500 MB × 0.008 = 4 Gb
The converter above does this for any value you type, in either direction.
What is a megabyte?
A megabyte is one million bytes, the familiar unit for photos, songs and app sizes.
Definition: Exactly 1,000,000 bytes under SI prefixes. The binary mebibyte (MiB) is 1,048,576 bytes.
Where it is used: Photo and audio file sizes, app downloads, and mobile data allowances.
What is a gigabit?
A gigabit is one billion bits, the unit of modern high-speed networking.
Definition: Exactly 1,000,000,000 bits, so exactly 125,000,000 bytes.
Where it is used: Gigabit Ethernet, fiber broadband tiers, and data-centre interconnects.
Megabytes vs Gigabits
The megabyte and the gigabit belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many gigabits are in a megabyte?
One megabyte equals 0.008 gigabits.
What is the formula to convert megabytes to gigabits?
Multiply the number of megabytes by 0.008. To reverse it, divide by 0.008 instead.
How do I convert gigabits back to megabytes?
Divide by 0.008, which is the same as multiplying by 125.
How many gigabits are in 10 megabytes?
10 MB works out to 0.08 Gb.
How is the megabyte defined?
Exactly 1,000,000 bytes under SI prefixes. The binary mebibyte (MiB) is 1,048,576 bytes.