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Chmod Calculator

Calculate Unix file permissions. Convert between octal, symbolic, and binary notation interactively.

ReadWriteExecuteValue
Owner7
Group5
Others5

Octal

755

Symbolic

rwxr-xr-x

Binary

111 101 101

chmod 755 filename

Frequently Asked Questions about Chmod Calculator

What does chmod 755 mean?▼
Chmod 755 means the owner has read, write, and execute permissions (7), while group and others have read and execute permissions (5). It's the standard permission for directories and executable files on Unix/Linux systems.
What is the difference between chmod 644 and 755?▼
644 (rw-r--r--) gives the owner read/write access and everyone else read-only. 755 (rwxr-xr-x) additionally grants execute permission. Use 644 for regular files and 755 for directories and scripts.
How do I change file permissions in Linux?▼
Use the command 'chmod [mode] [file]'. For example, 'chmod 755 script.sh' gives full owner permissions and read/execute for others. Use our calculator to find the correct octal code, then copy the command.

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