Chmod Calculator

Convert Unix permissions to octal and symbolic notation.

Octal 755

Symbolic rwxr-xr-x

Formula: Each digit = read(4) + write(2) + execute(1)

Step-by-step with your numbers:

1. Values used:

2. Owner (0-7) = 7

3. Group (0-7) = 5

4. Other (0-7) = 5

6. Octal = 755

7. Symbolic = rwxr-xr-x

Did we solve your problem today?

chmod permissions combine read, write and execute for owner, group and others.

The math behind it

Each digit adds read (4), write (2) and execute (1). 7 is rwx, 5 is r-x, 4 is r--.

755 means rwxr-xr-x.

What is 644?

rw-r--r-- - owner can read/write, everyone else read-only.