🍋 Format Tools
File Size Converter
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About File Size Converter
Convert file sizes between bytes, KB, MB, GB, TB in both decimal (SI) and binary (IEC) units. See real-world storage equivalents.
How It Works
Enter a file size like '1.5GB' or '1024KB' to convert between all units and see real-world storage equivalents.
Frequently Asked Questions
What's the difference between MB and MiB?
MB (megabyte) = 1,000,000 bytes (decimal/SI). MiB (mebibyte) = 1,048,576 bytes (binary/IEC). OS and drives often mix these conventions.
Why do drives show less space than advertised?
Drives are marketed in decimal units (1 TB = 1,000 GB) but OS reports in binary (1 TiB = 1,024 GiB), showing ~7% less.