Bytes to Megabytes
Type a value in either box to convert between bytes and megabytes. The factor is 1e-06.
| Bytes | Megabytes |
|---|---|
| 1 B | 1e-06 MB |
| 2 B | 2e-06 MB |
| 3 B | 3e-06 MB |
| 5 B | 5e-06 MB |
| 10 B | 1e-05 MB |
| 25 B | 2.5e-05 MB |
| 50 B | 5e-05 MB |
| 100 B | 0.0001 MB |
How to use
- Enter a value in the Bytes field.
- The Megabytes figure appears immediately — no button to press.
- Typing in the Megabytes field converts back to Bytes the same way.
- Use the reference table for the values that come up most often.
Bytes to Megabytes formula
To convert bytes to megabytes, multiply by 1e-06.
MB = B × 1e-06
Why this factor: the byte and the megabyte are both defined against the byte, so dividing one definition by the other gives 1e-06 directly. Both definitions are set out in full below.
To go the other way, divide by 1e-06 — or use the Megabytes to Bytes converter, which is the same calculation reversed.
Worked example
Start with 500 B. Multiply by 1e-06 to get 0.0005 MB.
500 B × 1e-06 = 0.0005 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 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.
Bytes vs Megabytes
The byte and the megabyte 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 megabytes are in a byte?
One byte equals 1e-06 megabytes.
What is the formula to convert bytes to megabytes?
Multiply the number of bytes by 1e-06. To reverse it, divide by 1e-06 instead.
How do I convert megabytes back to bytes?
Divide by 1e-06, which is the same as multiplying by 1000000.
How many megabytes are in 10 bytes?
10 B works out to 1e-05 MB.
How is the byte defined?
Exactly 8 bits.