# SJ Chmod Calculator — Calculate Chmod permissions

> Calculate Chmod permissions (iPhone/iPad app by Stephane JAILLIARD.)

- Source: https://appshunter.io/ios/app/sj-chmod-calculator/id6504128434 (this page in markdown: same URL + `.md`)
- Developer: [Stephane JAILLIARD](https://appshunter.io/developer/1749751077)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 3 MB
- Languages: American English, Arabic, French (France), German (Germany), Italian, Japanese, Korean, European Portuguese, Russian, Chinese (Simplified, China) and 1 more
- Released: 2024-06-25
- Data updated: 2026-06-11
- User reviews in markdown: https://appshunter.io/ios/app/sj-chmod-calculator/id6504128434/reviews.md

## What is SJ Chmod Calculator?

SJ Chmod Calculator is a free iOS app designed for system administrators, developers, and Linux/Unix users who need to quickly and accurately calculate, understand, and convert Unix file permissions.

With its clear and intuitive interface, the app makes it easy to switch between numeric and symbolic representations of file permissions.

SJ Chmod Calculator offers two simple methods to obtain or verify file or directory access rights.

First mode: Numeric code input (755, 644, 600, etc.)

The user enters a 3-digit chmod value. The app instantly displays:

– A permissions table (read, write, execute) for each category: User (owner), Group, Others
– The equivalent symbolic notation (e.g., rwxr-xr-x)

Second mode: Interactive table input

The user simply checks the boxes for read (R), write (W), and execute (X) for each category. The app automatically calculates:

– The corresponding numeric chmod value
– The Unix symbolic permission string

Key features:

– Instant conversion between numeric and symbolic notation
– Visual table of permissions by category (user, group, others)
– Intuitive interface, easy to use
– Free application

A practical tool for all Linux/Unix users

Whether you’re a developer, system administrator, student, or advanced user of Unix/Linux systems, SJ Chmod Calculator helps you manage file permissions quickly and effortlessly.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| A lemon tart | $4.99 | one-time |
| A coffee | $0.99 | one-time |
| A cookie | $2.99 | one-time |
| A pizza | $9.99 | one-time |
| No ads | $4.99 | one-time |



## Version history (last 5 releases)

### 1.5.4 — 2026-02-03

Minor modification related to the ad unit display

### 1.5.3 — 2025-08-14

- Fixed an issue with ads

### 1.5.2 — 2025-07-06

- Removal of advertising partners
- Lightened the application

### 1.5.1 — 2024-10-08

- Code optimization

### 1.5.0 — 2024-10-06

- Modification in localizations
- Added a popup to request a review

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## More apps by Stephane JAILLIARD

- [SJ IPv4 Calculator](https://appshunter.io/ios/app/sj-ipv4-calculator/id6503641575)
- [SJ Resistor Calculator](https://appshunter.io/ios/app/sj-resistor-calculator/id6504838457)
- [SJ Age Calculator](https://appshunter.io/ios/app/sj-age-calculator/id6563151005)
- [SJ Cart Calculator](https://appshunter.io/ios/app/sj-cart-calculator/id6627347063)
- [SJ Password Generator](https://appshunter.io/ios/app/sj-password-generator/id6639614295)

All apps by Stephane JAILLIARD: https://appshunter.io/developer/1749751077

## Related topics

[sj chmod calculator](https://appshunter.io/ios/topics/sj-chmod-calculator) · [chmod calculator](https://appshunter.io/ios/topics/chmod-calculator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*