MB to GB Converter
Convert megabytes to gigabytes and back with SI (1,000) or IEC binary (1,024) standards.
Reviewed October 7, 2026 Runs in your browser — inputs are never stored
GB
1.0240 GB
This tool provides general unit conversions for everyday and educational use. For regulated, legal, or scientific applications, verify conversion factors against the applicable official standard.
About the MB to GB Converter
The MB to GB converter changes file and storage sizes between megabytes and gigabytes in either the decimal SI standard (1 GB = 1,000 MB) or the binary IEC standard (1 GiB = 1,024 MiB). Phone plans and storage makers use decimal units; computers often report binary ones.
How to use it
- 1Choose SI (÷1,000) or IEC (÷1,024).
- 2Choose MB → GB or GB → MB.
- 3Enter the size and read the result.
- 4Copy, share or print the result with the buttons below it.
Worked example
2,500 MB is 2.5 GB in the SI standard and about 2.44 GiB in the binary standard.
How it works
Standards
SI: 1 GB = 1,000 MB. IEC: 1 GiB = 1,024 MiB. Operating systems traditionally use IEC, while manufacturers use SI.
Common use cases
- Checking mobile data usage
- Estimating storage needs
- Comparing file sizes
Frequently asked questions
A:SI: 1 GB = 1,000 MB. IEC: 1 GiB = 1,024 MiB.
A:The phone uses IEC (1,024-based) internally. 256 GB (SI) ÷ 1.073741824 ≈ 238 GiB on the device.
Reviewed for accuracy · Last updated October 7, 2026
Conversion factors are based on internationally defined SI units and standard metric/imperial equivalence tables.
CalcWisee Editorial Team
Calculator development and formula review
CalcWisee is an independent site founded by Ayman. Every calculator is built from a published formula or official definition, tested against hand-worked examples before it goes live, and corrected promptly when a reader reports an issue to ayman@calcwisee.com.
Expertise: Financial mathematics, Health and fitness formulas, Applied mathematics, Unit conversion standards
References & sources
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