Mb to Bytes ConverterRight in Your Browser
Convert megabytes (MB) to bytes (B). The megabyte (MB) is 1,000 kilobytes — the scale of photos, songs and email attachment limits. The byte (B) is 8 bits — the fundamental unit of file size, memory and storage on every computer. Everything is calculated locally in your browser — no server, and it works offline.
1000000 B
in bytes (byte)
To convert megabytes to bytes, multiply the megabyte value by 1000000.
Switch to Bytes to MbMb to Bytes Chart
| Megabytes (MB) | Bytes (B) |
|---|---|
| 1 | 1000000 |
| 2 | 2000000 |
| 3 | 3000000 |
| 4 | 4000000 |
| 5 | 5000000 |
| 10 | 10000000 |
| 20 | 20000000 |
| 50 | 50000000 |
| 100 | 100000000 |
Frequently Asked Questions
How many bytes are in a megabyte?
One megabyte equals 1000000 bytes (1 MB = 1000000 B). So to go from megabytes to bytes, multiply the megabyte value by 1000000.
What is the formula to convert megabytes to bytes?
To convert megabytes to bytes, multiply the megabyte value by 1000000. For example, 10 MB is 10000000 B.
What is 25 megabytes in bytes?
25 megabytes — a typical email attachment limit — is 25000000 bytes. The converter above works for any value, entirely in your browser.
Is the megabyte to byte conversion exact?
The factor used here is the defined value: 1 MB = 1000000 B. Results are rounded to six significant digits for readability, so for high-precision work use the full factor. This converter uses decimal (SI) units — 1 MB = 1,000 KB — matching drive labels and macOS. Windows Explorer reports binary mebibytes (1 MiB = 1,024 KiB), so the same file shows a slightly smaller number there.
Every conversion runs 100% in your browser — zero files uploaded, ever.
How to verify it yourself →