Megabyte to Gigabyte (MB to GB)
Convert MB to GB — Data Storage converter
1000 MB = 1 GB (decimal SI).
A megabyte (MB) is one-thousandth of a gigabyte (GB) under the decimal SI definition used here, so to convert megabytes to gigabytes you divide by 1000. For example, 500 MB = 0.5 GB.
Watch the convention: SI, storage makers, and networks use decimal (1000 MB = 1 GB), while operating systems and RAM figures use binary (1024 MiB = 1 GiB). Mixing the two is the usual reason advertised and reported sizes disagree.
1 MB = 0.001 GB
Megabyte to Gigabyte formula
1 Megabyte = 0.001 GB
Worked examples
- 25 MB = 0.025 GB
- 100 MB = 0.1 GB
Common uses
- Adding up file sizes into gigabytes
- Converting download or upload totals
- Reading storage and data-plan figures
Megabyte to Gigabyte conversion table
| Megabyte (MB) | Gigabyte (GB) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 8 | 0.008 |
| 10 | 0.01 |
| 12 | 0.012 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
Frequently asked questions
How many MB make a GB?
1000 MB = 1 GB in decimal (SI) units; 1024 MiB = 1 GiB in binary.
What is 500 MB in GB?
500 MB = 0.5 GB (decimal).
What is 1000 MB in GB?
1000 MB = 1 GB (decimal SI).
Why do MB and GB sometimes use 1024?
Binary units (MiB, GiB) step by 1024. Operating systems often display these while labelling them MB/GB, which causes the mismatch.