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GB to MB Converter
Calculate how many megabytes are in your gigabytes.
FILE SIZE CONVERTER
⇄Your conversion
Conversion standard
To
1 MB = 1,000 KB
Instant calculations. No sign-up needed.
How gb to mb conversion works
A decimal gigabyte contains 1,000 megabytes. A gibibyte contains 1,024 mebibytes.
A practical example
2.5 GB = 2,500 MB.
Using this tool
- Enter a non-negative amount and choose your conversion standard.
- Adjust decimal places to suit your task. Very small values retain significant digits.
- Copy the result with its unit, or swap the direction for a reverse conversion.
Why do decimal and binary results differ?
Decimal prefixes use powers of 1,000; binary prefixes use powers of 1,024. Bit-to-byte conversion always uses eight bits per byte. Explicit unit labels identify which convention applies.