MB to MiB Converter
Convert megabytes to mebibytes — the decimal unit to the binary one. Results update as you type; exact factors shown.
One megabyte (10⁶) is 0.9537 mebibyte (2²⁰) — see the exact factor, not a rounded rule of thumb.
How the mb to mib 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.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
Common data conversions
| From | To | Units |
|---|---|---|
| 1 MB | 0.9537 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 10 MB | 9.5367 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 50 MB | 47.6837 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 100 MB | 95.3674 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 250 MB | 238.4186 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 500 MB | 476.8372 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 700 MB | 667.572 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 1,000 MB | 953.6743 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 1,024 MB | 976.5625 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 2,000 MB | 1,907.3486 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 4,000 MB | 3,814.6973 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
| 8,000 MB | 7,629.3945 MiB | megabyte (10⁶) to mebibyte (2²⁰) |
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
What is a mebibyte?
2²⁰ bytes — 1,048,576 — against the megabyte's 1,000,000.
How much smaller is a MB than a MiB?
About 4.6%.
What is 1,000 MB in MiB?
953.67 MiB.
Why do two units exist?
Because computing counts in powers of two and the SI prefixes are powers of ten. The IEC created the binary prefixes in 1998 to separate them.
Which does a file manager show?
Usually binary sizes with decimal names — which is exactly the ambiguity the binary prefixes were meant to remove.
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 Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.