Mebibyte (MiB)
A mebibyte is 1,048,576 bytes (2²⁰), about 4.86 % more than a megabyte. Operating systems that count in powers of two often show MiB values labelled “MB”.
Symbol: MiB
Quantity: amount of digital information
SI relation: 1 MiB = 8388608 bit (exact)
Derivation: 1 MiB = 2²⁰ bytes = 1,048,576 bytes.
Exact: yes, by definition
Typical uses
- Memory and cache sizes
- Windows file sizes (shown as MB)
- Partition sizes in disk tools
Convert mebibytes to other units
| Conversion | 1 MiB equals | Reverse |
|---|---|---|
| mebibyte to byte | 1048576 B | byte to mebibyte |
| mebibyte to kilobyte | 1048.576 kB | kilobyte to mebibyte |
| mebibyte to megabyte | 1.048576 MB | megabyte to mebibyte |
| mebibyte to gigabyte | 0.001048576 GB | gigabyte to mebibyte |
| mebibyte to terabyte | 0.000001048576 TB | terabyte to mebibyte |
| mebibyte to bit | 8388608 bit | bit to mebibyte |
| mebibyte to megabit | 8.388608 Mbit | megabit to mebibyte |
| mebibyte to kibibyte | 1024 KiB | kibibyte to mebibyte |
| mebibyte to gibibyte | 0.0009765625 GiB | gibibyte to mebibyte |
| mebibyte to kilobit | 8388.608 kbit | kilobit to mebibyte |
| mebibyte to gigabit | 0.008388608 Gbit | gigabit to mebibyte |
| mebibyte to petabyte | 1.048576 × 10⁻⁹ PB | petabyte to mebibyte |
| mebibyte to tebibyte | 9.536743164 × 10⁻⁷ TiB | tebibyte to mebibyte |
Open the Data Storage Converter to convert any value between all units.
Sources
- Prefixes for binary multiples (kibi, mebi, gibi…, adopted by the IEC and now in IEC 80000-13), National Institute of Standards and Technology , Prefixes for binary multiples.
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Section 3, note on binary prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Mebibyte (MiB). Retrieved October 25, 2026, from https://scientificconverters.com/units/mebibyte/
IEEE
Scientific Converters, "Mebibyte (MiB)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/mebibyte/