DevOnlineTools

chmod Permission Calculator

Calculate Linux file permissions using an interactive checkbox matrix, generating numeric octal codes (e.g. 755), symbolic notation (rwxr-xr-x), and ready-to-use command snippets.

devonlinetools://security/chmod-calculator
⌘ + EnterRun / Format
Shortcuts Active
Octal Notation
755
Symbolic Notation
-rwxr-xr-x
Command
Permission Matrix
Role
Read (4)
Write (2)
Execute (1)
owner
group
others

Code Snippets & Examples

Copy-paste ready code implementations for your project:

Linux / macOS CLI
# Read, Write, Execute for Owner (7); Read, Execute for Group & Others (5)
chmod 755 script.sh

# Symbolic equivalent
chmod u=rwx,g=rx,o=rx script.sh