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CHMOD Calculator

Octal and symbolic Unix permissions, both directions.

Why this exists

Unix permissions guard every config and key file — sshd flatly refuses a private key left at 644. Translates between the octal and symbolic forms used by chmod, ls and Ansible.

🔒 Runs in your browser — nothing is sent anywhere
Owner
Group
Others
Octal
Symbolic
rw-r--r--
Command
chmod 644 file
  • Owner can read, write
  • Group can read
  • Others can read
Common modes