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Convert Bytes to MB — Data Size Converter

Data size conversion requires knowing whether you're using decimal (1000-based) or binary (1024-based) units.

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Decimal (SI)

1 MB = 1,000,000 bytes (10^6). Used by storage manufacturers and network speeds.

Binary (IEC)

1 MiB = 1,048,576 bytes (2^20). Used by operating systems and memory.

Frequently Asked Questions

Why does my 1TB drive show 931 GB?

Manufacturers use decimal TB (10^12 bytes). Windows uses binary TiB (2^40 bytes). 1 TB ≈ 931 GiB.