Chmod Calculator
Calculate Unix file permissions. Convert between symbolic (rwxr-xr-x) and numeric (755) chmod notation. Free chmod permission calculator.
Owner
Group
Others
Read (4)
Write (2)
Execute (1)
Numeric
755
Symbolic
rwxr-xr-x
chmod 755 filename chmod u=rwx,g=rx,o=rx filename Enter Numeric Value
Common Permissions
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Free Chmod Calculator Online
Calculate Unix file permissions with an interactive checkbox grid. Convert between numeric (octal) and symbolic chmod notation. Generate ready-to-use chmod commands.
Understanding Permissions
- Read (4) - View file contents or list directory
- Write (2) - Modify file or add/remove files in directory
- Execute (1) - Run file as program or enter directory
Permission Groups
Owner (u) - the file creator. Group (g) - users in the file's group. Others (o) - everyone else.