Megabytes to Megabits
Type a value in either box to convert between megabytes and megabits. The factor is 8.
| Megabytes | Megabits |
|---|---|
| 1 MB | 8 Mb |
| 2 MB | 16 Mb |
| 3 MB | 24 Mb |
| 5 MB | 40 Mb |
| 10 MB | 80 Mb |
| 25 MB | 200 Mb |
| 50 MB | 400 Mb |
| 100 MB | 800 Mb |
How to use
- Enter a value in the Megabytes field.
- The Megabits figure appears immediately — no button to press.
- Typing in the Megabits field converts back to Megabytes the same way.
- Use the reference table for the values that come up most often.
Megabytes to Megabits formula
To convert megabytes to megabits, multiply by 8.
Mb = MB × 8
Put another way, one megabyte is exactly 8 megabits.
Why this factor: the megabyte and the megabit are both defined against the byte, so dividing one definition by the other gives 8 directly. Both definitions are set out in full below.
To go the other way, divide by 8 — or use the Megabits to Megabytes converter, which is the same calculation reversed.
Worked example
Start with 64 MB. Multiply by 8 to get 512 Mb.
64 MB × 8 = 512 Mb
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 megabit?
A megabit is one million bits — the unit internet speeds are advertised in.
Definition: Exactly 1,000,000 bits, so exactly 125,000 bytes.
Where it is used: Broadband speed tiers and video streaming bitrates, quoted as Mb/s or Mbps.
Worth knowing: Divide advertised megabits per second by 8 to get the megabytes per second a download will actually show.
Megabytes vs Megabits
The megabyte and the megabit 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 megabits are in a megabyte?
One megabyte equals 8 megabits.
What is the formula to convert megabytes to megabits?
Multiply the number of megabytes by 8. To reverse it, divide by 8 instead.
How do I convert megabits back to megabytes?
Divide by 8, which is the same as multiplying by 0.125.
How many megabits are in 10 megabytes?
10 MB works out to 80 Mb.
Is there anything to watch out for with megabits?
Divide advertised megabits per second by 8 to get the megabytes per second a download will actually show.
How is the megabyte defined?
Exactly 1,000,000 bytes under SI prefixes. The binary mebibyte (MiB) is 1,048,576 bytes.