Data Storage / GiB → MB
Convert Gibibytes to Megabytes
Convert bit and byte counts with explicit decimal and binary prefixes. Convert Gibibytes (GiB) to Megabytes (MB). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Megabytes to Gibibytes →
How to convert gibibytes to megabytes
One byte is 8 bits. Decimal kilo/mega/giga use powers of 1000; binary kibi/mebi/gibi use powers of 1024. Marketing capacity and operating-system displays can therefore differ.
Use x for the value in GiB, b for the intermediate value in B, and y for the result in MB.
MB = GiB × 1073741824 ÷ 1000000
Worked examples
10 GiB ≈ 10737.41824 MB
Step 1: (10 × 1073741824) ≈ 10737418240 B.
Step 2: 10737418240 ÷ 1000000 ≈ 10737.41824 MB.20 GiB ≈ 21474.83648 MB
Step 1: (20 × 1073741824) ≈ 21474836480 B.
Step 2: 21474836480 ÷ 1000000 ≈ 21474.83648 MB.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Gibibytes
Gibibytes (GiB) measures data storage under the conventions above. The base value in B is (x × 1073741824), where x is the numerical value in GiB. Factors shown here are rounded for display; calculations use the stored factor.
About Megabytes
Megabytes (MB) measures data storage under the conventions above. The base value in B is (x × 1000000), where x is the numerical value in MB. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
For a different quantity or formatting task, see the related other conversion tools.
Gibibytes to megabytes reference table
| Gibibytes (GiB) | Megabytes (MB) |
|---|---|
| 1 | 1073.741824 |
| 5 | 5368.70912 |
| 10 | 10737.41824 |
| 25 | 26843.5456 |
| 50 | 53687.0912 |
| 100 | 107374.1824 |
| 1000 | 1073741.824 |
Browse every data storage conversion →