MB and MiB are different units
Decimal storage uses 1 GB = 1,000 MB. Binary storage uses 1 GiB = 1,024 MiB.
Unit converter
MB to GB Converter
Convert megabytes to gigabytes instantly. Decimal MB versus binary MiB. See the formula, worked examples and practical reference values.
How to convert MB to GB
Megabytes to gigabytes helps compare decimal storage capacities and file sizes; this page uses SI units where one gigabyte is 1,000 megabytes.
Formula: GB = MB × 0.001
Reverse formula: MB = GB × 1,000
Worked example
1 MB = 0.001 GB
- = 0.000001 TB
- = 0.953674 MiB
- = 0.000931 GiB
Avoid these errors
Common mistakes
Check whether the displayed label is accurate
Some software historically reports a binary quantity while labelling it MB or GB, which changes the apparent conversion.
Useful for: Decimal file and storage sizes in gigabytes.
Common MB to GB conversions
| megabytes | gigabytes |
|---|---|
| 1 MB | 0.001 GB |
| 10 MB | 0.01 GB |
| 100 MB | 0.1 GB |
| 500 MB | 0.5 GB |
| 1,000 MB | 1 GB |
| 5,000 MB | 5 GB |
| 10,000 MB | 10 GB |
About the units
A megabyte is an universal unit represented by MB. A gigabyte is an universal unit represented by GB. Calculations use the same authoritative registry as the full data storage converter, retaining full precision until display.
Sources and definitions
IEC — Prefixes for binary multiples
Conversion constants come from the shared EzyCalculator unit registry. See how calculations are reviewed and tested.