Chmod Calculator
Calculate Unix file permissions in numeric and symbolic notation
How to Use Chmod Calculator
- Check boxes for owner, group, and others permissions
- Or enter a numeric value like 755
- See both symbolic and numeric representations
- Understand what each permission means
About Chmod Calculator
Calculate Unix/Linux file permissions easily. Convert between numeric (755) and symbolic (rwxr-xr-x) notation. Understand what permissions you're setting.
Frequently Asked Questions
What do r, w, x mean?
r=read (4), w=write (2), x=execute (1). Add them for combined permissions.
What's a common permission for files?
644 (rw-r--r--) for regular files, 755 (rwxr-xr-x) for executables.
What's the difference between owner, group, and others?
Owner is the file creator, group is users in the same group, others is everyone else.