GB to Megabytes Converter
Convert gigabytes to megabytes instantly — supports both decimal (SI) and binary (IEC) standards.
GB → MB Calculator
MB = GB × 1,000 (decimal) | MiB = GB × 1,024 (binary)
GB to MB Conversion Table
| GB | MB (decimal) | MiB (binary) |
|---|---|---|
| 0.5 | 500 | 512 |
| 1 | 1,000 | 1,024 |
| 2 | 2,000 | 2,048 |
| 5 | 5,000 | 5,120 |
| 10 | 10,000 | 10,240 |
| 25 | 25,000 | 25,600 |
| 50 | 50,000 | 51,200 |
| 100 | 100,000 | 102,400 |
| 500 | 500,000 | 512,000 |
| 1000 | 1,000,000 | 1,024,000 |
Frequently Asked Questions
How do you convert GB to MB?
Multiply GB by 1,000 (decimal SI). Formula: MB = GB × 1,000.
How many MB is 1 GB?
1 GB = 1,000 MB (decimal/SI) or 1,024 MB (binary/IEC).
How many MB is 2.5 GB?
2.5 GB = 2,500 MB (decimal) or 2,560 MB (binary).
Why are there two different answers?
Storage manufacturers use decimal (1 GB = 1,000 MB) while operating systems use binary (1 GiB = 1,024 MiB). This calculator shows both.
Is this calculator free?
Yes, it runs entirely in your browser with no sign-up required.