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Chmod Calculator

Toggle permissions visually and get the numeric chmod value instantly. No more Googling whether 755 gives group read access.

100% Free · No limits

Chmod
Calculator

Calculate Unix file permissions with a visual checkbox grid. Toggle permissions, see numeric and symbolic output instantly. All client-side.

Common:
Numeric
755
Symbolic
rwxr-xr-x
Permission Matrix
Read
Write
Execute
Owner
✓
✓
✓
Group
✓
✓
Other
✓
✓
Owner
7
rwx
Group
5
r-x
Other
5
r-x
Enter Numeric Permission
Command
chmod 755 filename
Permission Breakdown
Ownercan read, write, execute
Groupcan read, execute
Othercan read, execute
Quick Reference
4r--Read
2-w-Write
1--xExecute
6rw-Read + Write
7rwxRead + Write + Execute
0---No permissions
Visual Permissions
Toggle permissions with an intuitive 3x3 checkbox grid. See numeric and symbolic output update in real time.
Reverse Lookup
Enter a numeric permission like 755 and see the corresponding checkbox states and human-readable breakdown.
100% Client-Side
Your data never leaves your browser. No server calls, no logging, no tracking. Completely private.

How to Calculate Chmod Permissions

Calculate Linux file permissions visually with The IT Hustle's free Chmod Calculator.

  1. 1
    Toggle permission checkboxesClick the read, write, and execute checkboxes for owner, group, and others.
  2. 2
    View the numeric valueSee the calculated numeric chmod value (like 755 or 644) update in real-time.
  3. 3
    Copy the chmod commandCopy the full chmod command with your calculated permissions, ready to run in your terminal.

Frequently Asked Questions

755 means the owner has read, write, and execute permissions (7), while group and others have read and execute only (5). This is the standard permission for directories and executable scripts.

Numeric mode uses numbers (755), while symbolic mode uses letters (rwxr-xr-x). Both achieve the same result — numeric is shorter, symbolic is more readable.

Common web permissions: 644 for files (owner read/write, others read-only) and 755 for directories (owner full, others read/execute). Never use 777 in production.

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