Runs locally
Chmod Calculator
Octal modes such as 755 to rwx.
Ctrl+Enter runs. Ctrl+Shift+Backspace clears.
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Converts a 3-digit octal mode into the symbolic owner, group and other bits.
About this tool
Check what chmod 755 or chmod 600 actually grants before you run it on a server. Enter the octal mode and see the read, write and execute bits for owner, group and others.
How to use it
- 01
Enter a 3-digit octal mode, for example 644.
- 02
Read the symbolic permissions.
- 03
Use the mode in your chmod command.
FAQ
Frequently asked questions
What does 755 mean?
rwxr-xr-x: the owner can read, write and execute; group and others can read and execute.
Are special bits like setuid supported?
No. The calculator handles the standard 3-digit modes.