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Chmod Calculator Online Free — File Permission Calculator

Calculate Unix file permissions as octal and symbolic notation.

lock_person Chmod Calculator Online Free — File Permission Calculator
verified_user Your files are processed only as needed and are not stored after the tool finishes.
Unix and Linux file permissions control who can read, write, and execute files and directories. The chmod command uses octal notation (like 755 or 644) or symbolic notation (like rwxr-xr-x) to set these permissions. Our interactive chmod calculator lets you click checkboxes for owner, group, and others permissions and instantly shows both the octal code and symbolic string to use with chmod. Essential for system administrators, developers, and anyone working with Linux servers.

Frequently Asked Questions

What does 755 mean? expand_more
755 means: owner has read+write+execute (7), group has read+execute (5), others have read+execute (5). It is the standard permission for executable files and directories.
What does 644 mean? expand_more
644 means: owner has read+write (6), group has read only (4), others have read only (4). Standard for configuration files and web assets.

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