# 엔지니어 계산기 Pro - 공학용 단위 변환기

> Specialized calculator for machinery and piping sites. 14 types of converters + 16 types of engineering calculators + automatic cable/circuit breaker recommendations

Canonical page: [https://chrome-stats.com/d/com.jjcat.engineercalculator](https://chrome-stats.com/d/com.jjcat.engineercalculator)

## Overview

- **ID:** `com.jjcat.engineercalculator`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Velvet Paw Studio
- **Category:** TOOLS
- **Downloads:** 21
- **Version:** 1.1.0
- **Last updated:** 2026-06-24
- **First published:** 2026-06-23
- **Publisher country:** KR
- **Size:** 21 MB
- **Data as of:** 2026-09-10
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.jjcat.engineercalculator)
- **Website:** [https://zildra77.github.io](https://zildra77.github.io/)
- **Privacy policy:** [https://gist.github.com/zildra77/710a9e7b271210aa03f039e3be77f595](https://gist.github.com/zildra77/710a9e7b271210aa03f039e3be77f595)

## Description

This is a professional calculator app for field engineers.<br><br>📐 14 Converters<br><br>Length, Weight, Area, Temperature, Speed, Exchange Rate, Volume, Pressure, Flow Rate, Force/Torque, Electric Power, Angle, Data, Fuel Efficiency<br><br>🧮 16 Engineering Calculators<br><br>- Single-phase/Three-phase Power Calculation (P=VIcosφ)<br><br>- Voltage Drop Calculation<br><br>- Power Factor Improvement (Capacitor Capacity)<br><br>- Torque/Output/RPM (P=τω)<br><br>- Belt/Pulley Speed ​​Ratio<br><br>- Thermal Expansion Calculation<br><br>- Round Pipe Flow Rate (Q=Av)<br><br>- Pump Head Calculation<br><br>- Heat Calculation (Q=mcΔT)<br><br>- Cooling Load Calculation<br><br>- Stress/Safety Factor (σ=F/A)<br><br>- Crane SWL Calculation<br><br>- Concrete Volume<br><br>- Safety Factor Determination<br><br>- Speed/Distance/Time<br><br>⭐ Key Features<br><br>- Automatic Cable Gauge Recommendation<br><br>- Automatic Circuit Breaker Capacity Recommendation<br><br>- Automatic Motor Capacity Recommendation<br><br>- Hazard Level Warning Display<br><br>- Favorites Feature<br><br>- Dark Theme

## Rankings

- #2,586,896 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.jjcat.engineercalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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