Explains the distinction between decimal prefixes such as MB and binary prefixes such as MiB.
Dedicated unit pair
Gibibytes to Mebibytes
Convert GiB to MiB instantly, then review the formula, assumptions, and rounding guidance.
Data storageInstant result
Decimals
Formula result = input × 1073741824 ÷ 1048576. 1 GiB = 1,024 MiB
Common examples
One value, several units
Bytes1,073,741,824 B
Bits8,589,934,592 bit
Kilobytes1,073,741.824 kB
Megabytes1,073.7418 MB
Gigabytes1.0737 GB
Terabytes0.0011 TB
Kibibytes1,048,576 KiB
Mebibytes1,024 MiB
Conversion table
| GiB | MiB |
|---|---|
| 1 GiB | 1,024 MiB |
| 2 GiB | 2,048 MiB |
| 5 GiB | 5,120 MiB |
| 10 GiB | 10,240 MiB |
| 25 GiB | 25,600 MiB |
| 50 GiB | 51,200 MiB |
| 100 GiB | 102,400 MiB |
Conversion chart
1 GiB1,024 MiB
5 GiB5,120 MiB
10 GiB10,240 MiB
25 GiB25,600 MiB
50 GiB51,200 MiB
Worked example
1 byte equals 8 bits.
Unit definition
Gibibytes (GiB) One gibibytes equals 1,073,741,824 byte.
Unit history
Gibibytes is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert GiB to byte.
3. Convert the base value to MiB and apply your display precision.
Understand the result before using it
Gibibytes to Mebibytes converts a value measured in Gibibytes (GiB) into the equivalent value in Mebibytes (MiB). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 1073741824 ÷ 1048576
Assumptions
- Gibibytes and Mebibytes represent the same data storage quantity.
- The input is expressed in GiB; the output is expressed in MiB.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 GiB = 1,024 MiB. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a GiB measurement in a document that expects MiB.
- Compare a gibibytes value with a value reported in mebibytes.
- Check the GiB-to-MiB arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Decimal kB/MB/GB and binary KiB/MiB/GiB use different multipliers and should not be treated as synonyms.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Gibibytes to Mebibytes?
result = input × 1073741824 ÷ 1048576 Using the displayed relationship, 1 GiB equals 1,024 MiB.
How many Mebibytes are in one Gibibytes?
One Gibibytes is 1,024 Mebibytes. The displayed digits may be rounded.
Can I reverse the GiB to MiB conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts MiB back to GiB.
Is the Gibibytes to Mebibytes result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.