Unix Permissions Calculator - Convert between chmod numeric and symbolic notation

You do not need a spreadsheet to convert between chmod numeric and symbolic notation. This Unix Permissions Calculator gives you the answer in seconds. All you need to supply is input mode, numeric (e.g., 755), owner read, owner write, owner execute, group read, group write, group execute, other read, other write, other execute, numeric, symbolic, checkboxes, symbolic (e.g., rwxr-xr-x), owner, group, other, read, write and execute. From there, the tool determines numeric notation, symbolic notation, chmod command and other key metrics. The tool processes your input according to established standards, producing output you can trust in production code.

Developer tools automate tedious transformations so you can focus on the logic that matters. Always specify the character encoding (usually UTF-8) before encoding or hashing text. People frequently need to convert between chmod numeric and symbolic notation but lack a quick way to do it — this tool fills that gap. Industry standards define the rules these tools follow — consistent output means fewer surprises in production. Compare multiple scenarios by saving or noting each result before changing inputs. Test edge cases: empty strings, Unicode characters, very long inputs, and special characters.