File Size Converter

Convert between bytes, KB, MB, GB, TB, and PB with this free online file size converter.

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About This Tool

This File Size Converter tool allows you to easily convert between different digital storage units including bytes, kilobytes (KB), megabytes (MB), gigabytes (GB), terabytes (TB), and petabytes (PB). Simply enter your value, select the source unit and target unit, and get instant accurate conversion results. Perfect for developers, IT professionals, and anyone working with digital storage calculations.

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How to Use

Enter the numerical value you want to convert in the 'Value' field
Select the source unit (what you're converting from) from the first dropdown
Select the target unit (what you're converting to) from the second dropdown
Click the 'Convert File Size' button
View your converted result in the results section below

Frequently Asked Questions

Find Quick Answers

What file size units does this converter support?

This converter supports bytes, kilobytes (KB), megabytes (MB), gigabytes (GB), terabytes (TB), and petabytes (PB) using the standard binary conversion (1 KB = 1024 bytes).

Is this tool free to use?

Yes, this file size converter is completely free with no registration required. You can use it as many times as you need.

How accurate are the conversions?

All conversions are mathematically precise using the standard binary conversion factors (e.g., 1 MB = 1024 KB, 1 GB = 1024 MB). The calculations are performed client-side with JavaScript for maximum accuracy.

Can I convert very large file sizes?

Yes, the tool can handle extremely large values up to petabytes. The JavaScript implementation uses precise floating-point arithmetic to ensure accuracy even with very large numbers.

Need to run multiple calculations?

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