Bytes to MB Converter
Convert bytes to megabytes — divide by a million. Results update as you type; exact factors shown.
One byte is 0 megabyte (10⁶) — see the exact factor, not a rounded rule of thumb.
How the bytes to mb converter works
Storage converts through the byte (8 bits). Drive makers and network speeds use decimal prefixes (1 GB = 10⁹ bytes); operating systems often report binary units (1 GiB = 2³⁰ = 1,073,741,824 bytes) — sometimes labelled "GB". The gap is 7.4% at the gigabyte and 10% at the terabyte.
The UK is metric for most trade and science but keeps miles, pints, stone and mpg (with the imperial gallon) in daily life.
Common data conversions
| From | To | Units |
|---|---|---|
| 1,000 B | 0.001 MB | bytes to megabyte (10⁶) |
| 10,000 B | 0.01 MB | bytes to megabyte (10⁶) |
| 100,000 B | 0.1 MB | bytes to megabyte (10⁶) |
| 1,000,000 B | 1 MB | bytes to megabyte (10⁶) |
| 1,048,576 B | 1.0486 MB | bytes to megabyte (10⁶) |
| 5,000,000 B | 5 MB | bytes to megabyte (10⁶) |
| 10,000,000 B | 10 MB | bytes to megabyte (10⁶) |
| 50,000,000 B | 50 MB | bytes to megabyte (10⁶) |
| 100,000,000 B | 100 MB | bytes to megabyte (10⁶) |
| 500,000,000 B | 500 MB | bytes to megabyte (10⁶) |
| 1,000,000,000 B | 1,000 MB | bytes to megabyte (10⁶) |
| 5,000,000,000 B | 5,000 MB | bytes to megabyte (10⁶) |
Units in this converter and their exact factors
| Unit | Symbol | One unit in bytes |
|---|---|---|
| bit | bit | 0.125 byte |
| byte | B | 1 byte |
| kilobyte (10³) | kB | 1,000 byte |
| megabyte (10⁶) | MB | 1,000,000 byte |
| gigabyte (10⁹) | GB | 1,000,000,000 byte |
| terabyte (10¹²) | TB | 1,000,000,000,000 byte |
| kibibyte (2¹⁰) | KiB | 1,024 byte |
| mebibyte (2²⁰) | MiB | 1,048,576 byte |
| gibibyte (2³⁰) | GiB | 1,073,741,824 byte |
| tebibyte (2⁴⁰) | TiB | 1,099,511,627,776 byte |
FAQFrequently asked questions about data conversion
How many bytes in a megabyte?
1,000,000 on the decimal definition.
What is 1,048,576 bytes?
One mebibyte, which is 1.049 MB.
How big is a photo?
A modern phone photo is typically 2 to 6 MB, so 2 to 6 million bytes.
What is a gigabyte in bytes?
One billion — 1,000,000,000.
Why do file sizes differ between programs?
Because some report decimal megabytes and some binary mebibytes, a 4.9% difference.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Physical Laboratory (NPL) — United Kingdom's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.