How Many MB in a GB?
There are 1,000 MB in a GB (decimal/SI standard) or 1,024 MB in a GiB (binary standard). Most storage manufacturers use the decimal standard.
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Formula
Answer: There are 1,000 MB in a GB (decimal/SI standard) or 1,024 MB in a GiB (binary standard). Most storage manufacturers use the decimal standard.
Example
Question: How many MB in a GB? Answer: There are 1,000 MB in a GB (decimal/SI standard) or 1,024 MB in a GiB (binary standard). Most storage manufacturers use the decimal standard.
How to Use
- Read the direct answer at the top of the page
- Check the conversion table for common values
- Use the related converter for custom values
- Browse the FAQ for common follow-up questions
Frequently Asked Questions
Why does my 1TB drive show only 931 GB?
Drive makers use decimal (1 TB = 1,000,000,000,000 bytes), but Windows uses binary (1 TiB = 1,099,511,627,776 bytes). 1TB / 1.0995 = 931 GiB.
What is the difference between MB and MiB?
MB (megabyte) = 1,000,000 bytes (decimal). MiB (mebibyte) = 1,048,576 bytes (binary, 2^20). Windows labels MiB as MB, causing confusion.
How many KB in a MB?
There are 1,000 KB in 1 MB (decimal) or 1,024 KiB in 1 MiB (binary).