GB to MB: Convert Gigabytes to Megabytes
To convert GB to MB, multiply by 1,000 for the decimal (SI) result or by 1,024 for the binary result. So 8 GB is 8,000 MB decimal and 8,192 MiB binary. Use decimal for data plans and billing, binary for RAM and operating-system figures.
Bytes
1.0000e+12
KB (10³)
1.0000e+9
MB (10⁶)
1.0000e+6
GB (10⁹)
1,000
TB (10¹²)
1
KiB (2¹⁰)
9.7656e+8
MiB (2²⁰)
953,674.3164
GiB (2³⁰)
931.3226
TiB (2⁴⁰)
0.9095
Bits
8.0000e+12
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The formula
MB = GB × 1,000 (decimal) or MiB = GiB × 1,024 (binary). The reverse is a division by the same factor. When you are writing a limit into code, express it in raw bytes so nobody has to guess which multiplier you meant.
Sizing quotas and limits
If you offer a 10 GB storage plan, decide up front whether that is 10,000,000,000 bytes or 10,737,418,240 bytes and document it — the 737 MB difference is real money at scale and a real argument with a customer at the boundary. The same applies to backup windows, log retention budgets and per-tenant caps.
GB to MB conversion table
| Gigabytes | Decimal (MB) | Binary (MiB) |
|---|---|---|
| 0.5 GB | 500 MB | 512 MiB |
| 1 GB | 1,000 MB | 1,024 MiB |
| 2 GB | 2,000 MB | 2,048 MiB |
| 4 GB | 4,000 MB | 4,096 MiB |
| 8 GB | 8,000 MB | 8,192 MiB |
| 16 GB | 16,000 MB | 16,384 MiB |
| 100 GB | 100,000 MB | 102,400 MiB |