Chmod calculator
Toggle read/write/execute bits, type an octal value, or paste an ls -l string — all three stay in sync.
Permission grid
| Read | Write | Execute | |
|---|---|---|---|
| Owner | |||
| Group | |||
| Others |
Octal
Symbolic (ls -l)
Result
Octal: · Symbolic:
Common presets
About this tool
chmod sets who can read, write, or execute a file. Octal notation (like 755) is what you type in the shell; symbolic notation (like -rwxr-xr-x) is what ls -l shows. This calculator keeps both in sync so you can start from whichever format you have.
Remember: directories need the execute bit to be entered (cd), even if you only care about listing them. Scripts need execute for the shebang to run.
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