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Chmod Calculator

Calculate Unix file permissions in numeric and symbolic notation.

Files never leave your deviceNo signup required

Numeric

755

Symbolic

rwxr-xr-x

chmod 755 filename

Common Presets

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Manage Permissions at Scale

Pro includes recursive permission audits, security recommendations, and common permission presets.

Frequently Asked Questions

What does chmod 755 mean?▼

755 = Owner: read+write+execute (7), Group: read+execute (5), Others: read+execute (5). This is the standard permission for directories and executable files.

What is the difference between 644 and 755?▼

644 = Owner can read+write, everyone else can only read. Used for regular files. 755 = Owner can do everything, everyone else can read+execute. Used for directories and scripts.

How to Use Chmod Calculator

1Open the Chmod Calculator tool above - it loads instantly in your browser.
2Enter your data or upload your file. Everything is processed locally on your device - nothing is uploaded to any server.
3Get your results instantly. Copy, download, or share - completely free with no signup required.

Chmod Calculator is part of BriskTool's collection of free online tools. All processing runs entirely in your browser for maximum privacy and speed.

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