# Thread Calculator & Chart

> Thread calculator and tap drill chart for Metric, UNC, UNF, NPT & BSP.

Canonical page: [https://chrome-stats.com/d/com.threadcalculator.chart](https://chrome-stats.com/d/com.threadcalculator.chart)

## Overview

- **ID:** `com.threadcalculator.chart`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Storm Wayne
- **Category:** TOOLS
- **Downloads:** 172
- **Version:** 1.0.2
- **Last updated:** 2026-10-17
- **First published:** 2026-08-25
- **Publisher country:** IL
- **Size:** 38 MB
- **Data as of:** 2026-10-22
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.threadcalculator.chart)
- **Website:** [http://saharavr.github.io](http://saharavr.github.io/)
- **Privacy policy:** [https://saharavr.github.io/privacy-policy/thread-calculator-chart/](https://saharavr.github.io/privacy-policy/thread-calculator-chart/)

## Description

Thread Calculator &amp; Chart is the complete thread engineering and tap drill reference designed for machinists, CNC programmers, toolmakers, mechanical engineers, and workshop fabricators.<br><br>Get instant, accurate thread dimensions and recommended tap drill sizes across all major industrial thread standards. Whether you are setting up a CNC lathe, tapping a hole in the workshop, or designing precision threaded assemblies, Thread Calculator &amp; Chart provides the exact geometry you need in seconds.<br><br>SUPPORTED THREAD STANDARDS:<br>- ISO Metric (Coarse and Fine pitch profiles, standard tolerance classes)<br>- Unified National Coarse (UNC)<br>- Unified National Fine (UNF)<br>- National Pipe Taper (NPT)<br>- British Standard Pipe (BSP - Parallel BSPP / G and Tapered BSPT / R)<br><br>KEY FEATURES &amp; CAPABILITIES:<br>- Instant Thread Geometry: Calculate major diameter, pitch diameter, minor diameter, thread pitch, threads per inch (TPI), and basic thread depth.<br>- Recommended Tap Drill Sizes: Find the correct drill size for cut tapping and standard thread engagement.<br>- Searchable Reference Charts: Quickly browse standard thread sizes and drill tables with real-time filtering and search.<br>- Tolerance and Fit Classes: Explore internal and external thread specifications for precision fits.<br>- Saved Calculations: Save frequently used thread configurations with custom notes for quick reference during machining jobs.<br>- History Tracking: Revisit recent calculations without re-entering parameters.<br>- Engineering Guide: Access in-app diagrams and reference notes explaining thread profile formulas and geometry standards.<br><br>BUILT FOR PRECISION WORK:<br>Designed for high efficiency in active workshop environments. Clean, high-contrast typography and intuitive controls make finding thread dimensions fast, reliable, and straightforward.

## Rankings

- #1,857,116 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.SYSTEM_ALERT_WINDOW`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.threadcalculator.chart.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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