File Size Calculator
Convert file sizes instantly with support for all units, file type estimators, and both binary/decimal calculations.
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Unlike other tools, your files are processed locally in your browser. Zero uploads, zero storage, zero privacy risks. Your sensitive data stays yours.
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How to Use the Advanced File Size Calculator
Choose Calculator Type
Select Basic Converter for general conversions, or use specialized calculators for Images, Videos, or Audio files.
Enter Your Values
Input file size, dimensions, duration, or quality settings depending on the calculator you're using.
View Results Instantly
Get real-time calculations with all unit conversions, compression estimates, and helpful context.
Understanding the Results
Use binary (1024) for traditional computing or decimal (1000) for modern storage devices and specifications.
