GB to MB Converter
Convert gigabytes to megabytes instantly. Use decimal (SI) or binary (IEC) results.
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File Size
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Manual Conversion
Result
Decimal (SI): —
Binary (IEC): —
Exact value: —
Quick convert to:
How It Works
Convert gigabytes to megabytes instantly. Use decimal (SI) or binary (IEC) results.
Formula
1 GB = 1,000 MB (decimal) or 1 GB = 1,024 MiB (binary equivalent)
Decimal vs Binary
Decimal (SI) — 1 KB = 1,000 B, 1 MB = 1,000,000 B, 1 GB = 1,000,000,000 B.
Binary (IEC) — 1 KiB = 1,024 B, 1 MiB = 1,048,576 B, 1 GiB = 1,073,741,824 B.
Conversion Table
| GB | MB |
|---|---|
| 1 | — |
| 2 | — |
| 5 | — |
| 10 | — |
| 20 | — |
| 50 | — |
| 100 | — |
| 500 | — |
| 1,000 | — |
Examples
- 1 GB = —
- 5 GB = —
- 10 GB = —
- 50 GB = —
- 100 GB = —
Frequently Asked Questions
How many MB are in 1 GB?
In decimal (SI), 1 GB = 1,000 MB. In binary (IEC), 1 GiB = 1,024 MiB.
Is GB decimal or binary?
GB is a decimal (SI) unit defined as 1,000,000,000 bytes. The binary equivalent is GiB.
What is the difference between GB and GiB?
GB = 10^9 bytes. GiB = 2^30 bytes. GiB is about 7.4% larger.
How accurate is this converter?
This converter uses exact integer byte calculations, so results are exact.