How to convert megabytes to bytes
To convert megabytes to bytes, multiply by 1,000,000. Data size conversions matter for file uploads, cloud storage plans, hard drives and internet usage. Decimal (SI) prefixes are used: 1 KB = 1,000 bytes.
Megabyte to Byte conversion table
| Megabyte (MB) | Byte (B) |
|---|---|
| 0.1 MB | 100,000 B |
| 0.5 MB | 500,000 B |
| 1 MB | 1,000,000 B |
| 2 MB | 2,000,000 B |
| 3 MB | 3,000,000 B |
| 4 MB | 4,000,000 B |
| 5 MB | 5,000,000 B |
| 10 MB | 10,000,000 B |
| 20 MB | 20,000,000 B |
| 25 MB | 25,000,000 B |
| 50 MB | 50,000,000 B |
| 100 MB | 100,000,000 B |
| 500 MB | 500,000,000 B |
| 1,000 MB | 1,000,000,000 B |
About the units
Megabyte (MB)
A megabyte is 1,000,000 bytes, roughly the size of a short MP3 minute or a photo.
Byte (B)
A byte is 8 bits and typically stores one character of text.
How to use this converter
- Type the number of megabytes (MB) in the input box.
- The result in bytes appears instantly — no button needed.
- See the same value in every other data storage unit just below.
- Use “Swap units” to convert bytes back to megabytes.
When you’ll use the megabyte to byte conversion
Converting megabytes to bytes comes up more often than you might expect — for example when planning backups, understanding data plan usage, or checking whether a file fits an upload limit. Type your number once and you get the exact answer plus every related unit, so you don’t need to convert twice.
💡 The factor is exact and easy to remember: 1 MB = 1,000,000 B.
Watch out for these mix-ups
- Drive makers use 1 KB = 1,000 bytes; operating systems often show KiB (1,024).
- Internet speeds are in bits per second, file sizes in bytes — a factor of 8.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many bytes are in one megabyte?
One megabyte equals 1,000,000 bytes. 1,000,000 is the exact factor used by this converter.
How do I convert megabytes to bytes?
Multiply the value in megabytes by 1,000,000. To go the other way, multiply bytes by 0.000001.
What is 10 MB in B?
10 MB = 10,000,000 B. Also, 5 MB = 5,000,000 B and 100 MB = 100,000,000 B.
What is the difference between a megabyte and a byte?
A megabyte is 1,000,000 bytes, roughly the size of a short MP3 minute or a photo. A byte is 8 bits and typically stores one character of text.
Is this tool free and private?
Yes — the Megabyte to Byte is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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