Calculate a chmod Permission Online

Toggle read, write, and execute for owner, group, and others to see the octal and symbolic values update live. Common presets like 755, 644, and 600 are one click, and the full command is ready to copy.

Developer

RWX

Chmod Calculator

Calculate Unix file permissions with an interactive chmod builder

Enter octal value

Enter symbolic value

Common Presets

Special Bits

Advanced permission flags for executables and directories

Setuid (SUID)4

Execute as the file owner

Setgid (SGID)2

Execute as the file group / inherit group on directories

Sticky Bit1

Only owner can delete files in this directory

Generated Permissions

Numeric (Octal)

755

Symbolic

rwxr-xr-x

ls -l output

-rwxr-xr-x

Numeric Command

chmod 755 filename

Symbolic Command

chmod u=rwx,g=rx,o=rx filename

File / directory name (used in commands above)

Recursive (-R) - apply to directory contents

Permission Breakdown

Owner (u)

7rwx

ReadWriteExecute

- Read files / list directory contents
- Write / modify / delete
- Execute / traverse directory

Group (g)

5r-x

ReadWriteExecute

- Read files / list directory contents
- Execute / traverse directory

Others (o)

5r-x

ReadWriteExecute

- Read files / list directory contents
- Execute / traverse directory

Common Permissions Reference

Octal	Symbolic	Meaning
`777`	`rwxrwxrwx`	Full access for everyone
`755`	`rwxr-xr-x`	Owner full, others read and execute
`750`	`rwxr-x---`	Owner full, group read and execute
`700`	`rwx------`	Owner full access only
`666`	`rw-rw-rw-`	Read and write for everyone
`644`	`rw-r--r--`	Owner read/write, others read only
`600`	`rw-------`	Owner read/write only
`555`	`r-xr-xr-x`	Read and execute for everyone
`444`	`r--r--r--`	Read only for everyone
`400`	`r--------`	Owner read only