Bytes to Megabits
Convert bytes to megabits instantly — one byte is 8e-06 megabits.
| Bytes | Megabits |
|---|---|
| 1 B | 8e-06 Mb |
| 2 B | 1.6e-05 Mb |
| 3 B | 2.4e-05 Mb |
| 5 B | 4e-05 Mb |
| 10 B | 8e-05 Mb |
| 25 B | 0.0002 Mb |
| 50 B | 0.0004 Mb |
| 100 B | 0.0008 Mb |
How to use
- Enter a value in the Bytes field.
- The Megabits figure appears immediately — no button to press.
- Typing in the Megabits field converts back to Bytes the same way.
- Use the reference table for the values that come up most often.
Bytes to Megabits formula
The factor from bytes to megabits is 8e-06.
Mb = B × 8e-06
Why this factor: the byte and the megabit are both defined against the byte, so dividing one definition by the other gives 8e-06 directly. Both definitions are set out in full below.
To go the other way, divide by 8e-06 — or use the Megabits to Bytes converter, which is the same calculation reversed.
Worked example
Take 64 B and multiply by the factor 8e-06: the result is 0.000512 Mb.
64 B × 8e-06 = 0.000512 Mb
The converter above does this for any value you type, in either direction.
What is a byte?
A byte is eight bits — historically the space for one text character, and the standard unit of file size.
Definition: Exactly 8 bits.
Where it is used: File and storage sizes, memory capacity, and data quotas.
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.
Bytes vs Megabits
The byte 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 byte?
One byte equals 8e-06 megabits.
What is the formula to convert bytes to megabits?
Multiply the number of bytes by 8e-06. To reverse it, divide by 8e-06 instead.
How do I convert megabits back to bytes?
Divide by 8e-06, which is the same as multiplying by 125000.
How many megabits are in 10 bytes?
10 B works out to 8e-05 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 byte defined?
Exactly 8 bits.