Chmod Calculator

Generate Unix file permissions visually, or paste numeric/symbolic values to parse instantly.

Owner

Read (r) Write (w) Execute (x)

Group

Read (r) Write (w) Execute (x)

Other

Read (r) Write (w) Execute (x)

Numeric (e.g., 755)

Symbolic (e.g., rwxr-xr-x)

Presets

FAQ

What does chmod 755 mean?

Owner: read/write/execute. Group: read/execute. Others: read/execute.

What does chmod 644 mean?

Owner: read/write. Group: read only. Others: read only.

Should I use chmod 777?

Only when absolutely necessary. It allows anyone to read, write, and execute, which can be unsafe.