Convert GB to MB
A practical reference for converting gigabytes (GB) to megabytes (MB), a data unit. Type any value for an instant result, or use the reference table below.
1 GB = 1,024 MB
MB = GB × 1024
Conversion formula
MB = GB × 1024This page uses the binary convention where 1 GB = 1024 MB. Storage vendors often use the decimal 1 GB = 1000 MB.
Quick reference table
| gigabytes | megabytes |
|---|---|
| 0.5 GB | 512 MB |
| 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 |
| 32 GB | 32,768 MB |
| 64 GB | 65,536 MB |
| 128 GB | 131,072 MB |
| 256 GB | 262,144 MB |
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Open Unit ConverterFrequently asked questions
How many MB is 1 GB?
1 GB equals 1,024 MB.
Why does my result differ slightly from other sites?
Rounding. This page displays four decimal places while the underlying calculation keeps full precision.
Is my input sent to a server?
No. Every calculation runs locally in your browser and nothing is transmitted.
All calculations on this page run in your browser. Your input is never sent to a server.