Convert gigabytes to megabytes
Enter any value to calculate the result instantly.
gigabytes to megabytes formula
Multiply gigabytes by 1,024. This page uses the common binary convention in which each larger unit contains 1,024 of the next smaller unit.
Conversion table
Use these reference values for a quick comparison. The calculator above accepts positive, negative, decimal, and large values when they are meaningful for the quantity.
| gigabytes | megabytes |
|---|---|
| 1 GB | 1,024 MB |
| 2 GB | 2,048 MB |
| 4 GB | 4,096 MB |
| 8 GB | 8,192 MB |
| 16 GB | 16,384 MB |
| 100 GB | 102,400 MB |
How to use this converter
Enter the source measurement in the first field. CalUnit applies the displayed formula and updates the destination value immediately. You can use decimals and negative values, copy the result into your work, and compare it with the reference table. Keep the original unit beside the starting measurement so another reader can verify the calculation. For a different unit pair, open the complete data conversion guide or the multi-unit data converter.
When this conversion is useful
Drive manufacturers often use decimal units, where 1 GB equals 1,000 MB, while operating systems may use binary quantities. Strict binary labels are GiB and MiB.
Accuracy and rounding
Check the convention used by the source before comparing advertised storage with displayed capacity. The calculator intentionally matches CalUnit's 1,024-based data category.
Standards references
CalUnit checks physical unit relationships against authoritative measurement references. See the NIST Guide to the SI conversion factors and the BIPM SI Brochure. Regional cooking measures and digital storage conventions are identified separately because their names can represent more than one definition.