Folder Size Calculator

Select a folder to calculate total bytes, largest file, and extension counts without uploading anything.

Select folder

0 BTotal size

0Files

—Largest file

0Extension types

Choose a folderFolder sizes are calculated from files the browser allows you to select. Empty directories are not reported by the file picker.

How to use this Folder Size Calculator

Measure the total size and file count of a selected local folder. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.