Code tools
Chmod Calculator
Translate Unix file permission digits into read, write and execute permissions for owner, group and others.
Runs locallyRuns locally in your browser
Guide
Enter three digits or change read, write and execute for each group. Read the digits and permission letters. Special bits such as setuid are outside this three-digit calculator.
- Choose your input
Enter three digits or change read, write and execute for each group.
- Read the result
Read the digits and permission letters. Special bits such as setuid are outside this three-digit calculator.
- Keep your result
On a phone, select Output. Copy or download only when you want to keep the result.
Change one permission
Example file starts at 644. Check Owner Execute to get 744. The owner's permissions change from rw- to rwx; the group and others still have read access only.
On mobile, choose Output to read the result. Clear removes both fields.
Permissions
- Read: inspect the contents.
- Write: modify the contents.
- Execute: run a file or traverse a directory.
Shortcuts
- Ctrl / Cmd + Enter — Run selected action
- Ctrl / Cmd + Shift + C — Copy output
- Ctrl / Cmd + S — Download output
- ? — Show shortcuts outside text fields
Shortcuts work while focus is in the workspace. Copy and download need valid output.
Common questions
- Where is my input processed?
- In this browser. Input, keys, passwords and results are not stored or sent to a server.
- How do I clear my data?
- Choose Clear to remove entered data and results from this workspace.
- How does processing start?
- Examples update immediately. After typing or changing an option the result updates when you pause.
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