Gigabytes to Megabytes
Convert gigabytes (decimal) to megabytes (decimal) instantly. Change the amount or check the formula below.
More actions
Multiply GB by 1,000 to get MB.
Same value in other units View equivalents
| Unit | Equivalent value |
|---|---|
| Megabytes (decimal) (MB) | 5,000 MB |
| Gibibytes (binary) (GiB) | 4.656613 GiB |
| Mebibytes (binary) (MiB) | 4,768.371582 MiB |
How to convert GB to MB
Multiply GB by 1,000 to get MB.
Enter your value in the converter. The displayed result updates immediately. All math is performed in your browser. You can use the copy function to save a result or share a linked example with a colleague.
Quick reference table
Choose a value below to try it in the live converter.
| Gigabytes (decimal) | Megabytes (decimal) |
|---|---|
| 1,000 MB | |
| 2,000 MB | |
| 5,000 MB | |
| 10,000 MB | |
| 25,000 MB | |
| 50,000 MB | |
| 100,000 MB |
Results use the storage dimension. Choose compatible units only; the precision selector changes display rounding, not the underlying factor.
Verify GB to MB
Using the stated definitions, 1 GB = 1,000 MB and 10 GB = 10,000 MB. The live converter accepts your own value; the table provides additional check points.
Conversion method
Multiply GB by 1,000 to get MB.
Decimal prefixes versus binary prefixes
One GB (gigabyte) is 1,000,000,000 bytes, while one GiB (gibibyte) is 1,073,741,824 bytes. Many operating systems report binary quantities with different labels.
Do not assume GB and GiB are the same unit. A conversion of storage size does not estimate file compression or filesystem overhead.
Reference: NIST conversion factors. Calculation and display rounding are separate. See how we calculate.
Decimal GB is not binary GiB
This calculator converts decimal gigabytes to decimal megabytes: 1 GB = 1,000 MB. Some software uses binary counting, which should be labeled GiB and MiB. These quantities have different byte counts.
| Standard | 1 source unit | Target size | Byte count of source |
|---|---|---|---|
| Decimal (SI) | 1 GB | 1,000 MB | 1,000,000,000 bytes |
| Binary (IEC) | 1 GiB | 1,024 MiB | 1,073,741,824 bytes |
GB/MB use powers of 10; GiB/MiB use powers of 2. Comparing a number of GB with the same number of GiB compares different byte sizes. NIST gibibyte definition · Storage unit comparison.
Methodology: fixed SI definitions and standards-based factors. For safety-critical use, verify the required industry specification. Check definitions, conventions and sources.