# Convert Master-Unit Converter

> Fast offline unit converter with 16 categories. Simple, accurate & ad-free.

Canonical page: [https://chrome-stats.com/d/com.johndev.convertmaster](https://chrome-stats.com/d/com.johndev.convertmaster)

## Overview

- **ID:** `com.johndev.convertmaster`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** ST JOHNS PACKAGING COMPANY LIMITED
- **Category:** TOOLS
- **Downloads:** 4
- **Version:** 1.0.0
- **Last updated:** 2026-06-23
- **First published:** 2026-06-23
- **Publisher country:** VN
- **Size:** 10 MB
- **Data as of:** 2026-09-10
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.johndev.convertmaster)
- **Website:** [https://stjohnpackage.site/](https://stjohnpackage.site/)
- **Privacy policy:** [https://www.freeprivacypolicy.com/live/c545cd16-f4d6-4af0-a922-806c7b1c4af1](https://www.freeprivacypolicy.com/live/c545cd16-f4d6-4af0-a922-806c7b1c4af1)

## Description

Convert Master is a comprehensive offline unit converter designed for everyday use. Whether you need to convert length, weight, temperature, or any other measurement — this app delivers fast and accurate results without requiring an internet connection.<br><br>All conversions are performed locally on your device, ensuring both speed and privacy.<br><br>▸ KEY FEATURES<br><br>• 16 Conversion Categories — Length, Area, Weight, Volume, Temperature, Time, Speed, Pressure, Force, Energy, Power, Angle, Frequency, Fuel Consumption, Data Storage, and Currency.<br><br>• Instant Conversion — Enter a value and see all unit results update in real time. No need to press a button.<br><br>• Works Offline — Every calculation runs on your device. No internet required, no data collected.<br><br>• Built-in Calculator — Use the integrated keypad to enter values directly without switching apps.<br><br>• Favorites — Save your most-used unit groups for quick access.<br><br>• Conversion History — Review your recent conversions anytime.<br><br>• Custom Units — Add your own custom conversion units for specialized needs.<br><br>• Search &amp; Filter — Quickly find any unit by name or symbol.<br><br>• Dark Mode Support — Comfortable viewing in any lighting condition, with automatic system theme support.<br><br>• Precision Control — Adjust decimal precision from the settings to match your needs.<br><br>▸ SUPPORTED CATEGORIES<br><br>Basic: Length, Area, Weight, Volume<br>Living: Temperature, Time, Speed, Currency<br>Science: Pressure, Force, Energy, Power<br>More: Angle, Frequency, Fuel, Data Storage<br><br>▸ DESIGNED FOR SIMPLICITY<br><br>Convert Master features a clean and intuitive interface organized by category tabs. Select a category, choose a unit group, enter your value, and get instant results for all related units.<br><br>▸ PRIVACY FRIENDLY<br><br>This app does not collect, store, or transmit any personal data. All operations happen locally on your device.<br><br>Download Convert Master and simplify your unit conversions today.

## Rankings

- #2,980,362 — Overall

## Permissions and access

### Permissions

- `com.android.vending.CHECK_LICENSE`
- `com.johndev.convertmaster.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.johndev.convertmaster)