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Sum file sizes with per-file percentages, totals, and average — live as you drop files.
Sum file sizes with per-file percentages, totals, and average — live as you drop files.
Workspace
Private · Browser-based · No account · No upload
File Size Calculator is a free online File Utilities tool on AllToolHub. Sum file sizes with per-file percentages, totals, and average — live as you drop files.
It is designed for anyone packaging or inspecting files quickly. selected files are read in the browser within memory limits.
When you finish, download or copy the result and close the tab on shared computers. For multi-gigabyte archives, a desktop tool may still be more reliable.
Drop files — totals and percentages update automatically.
Review the bar breakdown and copy the summary.
Yes. File Size Calculator on AllToolHub is free, requires no account, and is built to run in your browser without a paid plan or watermarks from us.
Processing is designed to happen locally in your browser whenever possible. selected files are read in the browser within memory limits. Standard web hosting may still log technical page requests, not your file contents.
After the first visit, the Progressive Web App cache can keep many pages available offline. Tool scripts must be cached first; heavy libraries load when you open the tool.
For multi-gigabyte archives, a desktop tool may still be more reliable. Related tools appear in the sidebar if you need a neighboring workflow.
Modern Chrome, Edge, Firefox, Safari, and mobile equivalents. Some advanced file or crypto features need a recent browser version.
Sum file sizes with per-file percentages, totals, and average — live as you drop files. It runs in your browser on AllToolHub with no account required.
Very large inputs may be limited by your device memory and browser. For huge files, try a desktop machine or split the work into smaller batches.