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/ Chmod Calculator

Numeric (Octal)

Enter 3 digits (0-7), e.g., 755, 644, 777

Symbolic

Use r (read), w (write), x (execute), - (none)

chmod Command

Common Presets

Permission Breakdown

Role	Read (4)	Write (2)	Execute (1)	Value	Symbolic
owner	4	2	1	7	rwx
group	4	-	1	5	r-x
other	4	-	1	5	r-x

/ Selected Tool

Chmod Calculator

Convert between numeric and symbolic Unix file permissions

■ 01

What is chmod?

chmod (change mode) is a Unix/Linux command used to change file and directory permissions. Permissions control who can read, write, or execute a file. This calculator helps you convert between numeric (octal) and symbol…

■ 02

How does it work?

Permission Types Read (r = 4) - View file contents or list directory Write (w = 2) - Modify file or add/remove files in directory Execute (x = 1) - Run file as program or access directory Permission Groups Owner (User)…

■ 03

Sample Cases

Covers 755 - Standard directory, 644 - Standard file, and 700 - Private directory so you can compare common inputs and outputs quickly.

/ Code

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/ Integration

Source code from the selected tool, shown here alongside the live version on the right.

/ Source Code

TypeScript

typescript

// Chmod permission calculator in TypeScript
// No external dependencies required

interface PermissionSet {
  read: boolean;
  write: boolean;
  execute: boolean;
}

interface Permissions {