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File Size Checker

Drop any files and instantly get their exact sizes in bytes plus human-readable KB, MB and GB, with a grand total for the whole batch — useful before uploads with size limits.

Private processing: this file tool runs entirely in your browser — your files never leave your device.

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How to use File Size Checker

  1. 1Upload or provide your input
  2. 2Adjust the available options to your needs
  3. 3Click the main action button
  4. 4Wait a moment while the tool processes
  5. 5Download or copy your result

Frequently asked questions

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From the blog

Guides and tips that feature this tool.

PDF Guides

How to Merge PDF Files Online for Free

A step-by-step guide to combining multiple PDF files into one document online — free, private and without installing any software.

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