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Chmod Calculator

Convert between numeric and symbolic Unix file permissions. Generate chmod commands for quick permission setup.

Presets

Permission Settings

TargetRead (r)Write (w)Execute (x)Octal Value
Owner7
Group5
Others5

Octal Input

3-digit octal number (e.g., 755)

Octal Notation

755

Symbolic Notation

rwxr-xr-x

chmod Command

chmod 755 filename
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How to Use

Step 1

Set Permissions

Set Permissions

Select permissions with checkboxes

Step 2

Auto Calculate

Auto Calculate

Numeric and symbolic notations are auto-calculated

Step 3

Copy Result

Copy Result

Copy the chmod command

Features

Bidirectional

Convert between numeric (755) and symbolic (rwxr-xr-x)

Visual Setting

Intuitively set permissions with checkboxes

Command Generation

Generate ready-to-use chmod commands

FAQ

Each digit represents owner/group/others permissions: r=4, w=2, x=1 summed.