chmod Permission Calculator
Convert chmod values between numeric and symbolic formats, inspect owner, group, and others permissions, and generate a ready-to-use chmod command.
Input
Enter a numeric chmod value, a symbolic chmod value, or both if they match.
Result
Owner, group, others breakdown with ready-to-use command preview.
What this means
Owner can read, write, and execute.
Group can read and execute.
Others can read and execute.
For demo-file.txt, the owner can read, write, and execute. Users in the group can read and execute. Everyone else can read and execute.
Common presets
How chmod works
chmod maps numeric values to owner, group, and others permissions.
Numeric notation
Each digit represents permissions for owner, group, and others.
Permission values
4 = read, 2 = write, 1 = execute.
Practical example
755 becomes rwxr-xr-x.
Related tool
Calculate permissions from a Linux umask value.
Need to calculate the resulting file and directory permissions from a Linux umask value?
Open umask Calculator