What chmod 600 means
600 (rw-------) is for secrets: SSH private keys, .env files, API tokens, password stores and personal configuration.
SSH refuses to use a private key that others can read, with the error "permissions are too open" - chmod 600 ~/.ssh/id_ed25519 fixes it.
Adjust the checkboxes above to see how a different mode compares, or go back to the chmod calculator.
Other common values
- 644 - Standard file
- 755 - Directories and programs
- 777 - Everyone can do everything
- 700 - Private directory
- 400 - Read-only, owner only
- 775 - Shared team directory
- 664 - Group-editable file
- 2775 - Shared directory with setgid
- 1777 - Shared temp directory (sticky)
Frequently asked questions
Is this tool free?
Yes. The core tool is free to use in your browser.