Last updated: September 2026
Digital Storage conversion
Gigabytes to Megabytes
Convert decimal storage sizes for drive capacity, cloud plans, downloads, and vendor specifications.
Answer
Gigabytes to megabytes
1 GB equals 1,000 MB. 1 GiB equals 1,024 MiB. Decimal storage uses powers of 1,000, so MB = GB × 1000. Binary storage uses powers of 1,024, so MiB = GiB × 1024. 1 GB is 1,000,000,000 bytes and 1 GiB is 1,073,741,824 bytes.
MB = GB × 1000 MiB = GiB × 1024
| Amount | Decimal megabytes | Binary mebibytes |
|---|---|---|
| 0.5 GB or 0.5 GiB | 500 MB | 512 MiB |
| 1 GB or 1 GiB | 1,000 MB | 1,024 MiB |
| 2 GB or 2 GiB | 2,000 MB | 2,048 MiB |
| 5 GB or 5 GiB | 5,000 MB | 5,120 MiB |
| 10 GB or 10 GiB | 10,000 MB | 10,240 MiB |
| 100 GB or 100 GiB | 100,000 MB | 102,400 MiB |
Common questions
How many MB are in 1 GB?
1 GB equals 1,000 MB, which is 1,000,000,000 bytes. The formula is MB = GB × 1000.
Is 1 GB 1024 MB?
No. 1 GB equals 1,000 MB. 1 GiB equals 1,024 MiB, which is 1,073,741,824 bytes. The binary formula is MiB = GiB × 1024.
Calculated from OmniUnit's stored unit factors and shown to 12 significant digits.
1 GB
1000 MB
MB = GB × 1000
The formula
How to convert gigabytes to megabytes
Apply MB = GB × 1000. For example, 0.5 GB equals 500 MB.
Precision
Accurate constants, readable results
OmniUnit calculates with the full stored conversion factor, then displays up to 12 significant digits.
Common gigabytes conversions
| Gigabytes | Megabytes |
|---|---|
| 0.5 GB | 500 MB |
| 1 GB | 1000 MB |
| 2 GB | 2000 MB |
| 5 GB | 5000 MB |
| 10 GB | 10000 MB |
| 100 GB | 100000 MB |