# Thread Calculators — Thread Size Calculator

> Comprehensive thread size calculator for machinists and engineers. (iPhone/iPad app by Kantaben Gorasiya.)

- Source: https://appshunter.io/ios/app/thread-calculators/id1670586227 (this page in markdown: same URL + `.md`)
- Developer: [Kantaben Gorasiya](https://appshunter.io/developer/1640260396)
- Category: Utilities
- Price: $1.99
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 51 MB
- Languages: American English
- Released: 2023-02-09
- Data updated: 2026-08-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/thread-calculators/id1670586227/reviews.md

## What is Thread Calculators?

Get quick and accurate thread-cutting data with this complete thread calculator app. It supports a wide range of international thread standards, including M, MF, UNC, UNF, UNEF, UNR, UNS, NPT, NPTF, NPSC, NPSF, NPSL, NPSM, BA, BSP, BSF, BSW, BSPP, TR, and TRF.

Whether you're a machinist, engineer, or CNC professional, this app helps you find the right measurements instantly. Access detailed tables for thread dimensions and cutting values in one place.

Key tools included:
- Tap Hole Size Calculator – Find the correct drill size for perfect threading
- Bolt Diameter Guide – Quickly check standard bolt dimensions
- Tap Hole Forming Data – Accurate values for forming taps
- Tap Hole Repair Values – Fix damaged threads with the correct specs

This app is your handy companion for fast, reliable, and precise thread-cutting calculations.

## Key features

- Supports international thread standards (M, UNC, NPT, etc.)
- Tap Hole Size Calculator
- Bolt Diameter Guide
- Tap Hole Forming Data
- Tap Hole Repair Values
- Detailed thread dimension tables

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/thread-calculators/id1670586227/reviews.md

### 5/5 — Great app at your fingers

*2023-07-08*

Great app that you can type in your need and it will produce the answer. It would’ve be a added bonus if it gave you lettered drill sizes or fractional when it does the calculation.

## Frequently asked questions about Thread Calculators

### What thread standards does Thread Calculators support?

Thread Calculators supports a wide array of international thread standards, including M, MF, UNC, UNF, UNEF, UNR, UNS, NPT, NPTF, NPSC, NPSF, NPSL, NPSM, BA, BSP, BSF, BSW, BSPP, TR, and TRF.

### What are the key tools available in Thread Calculators?

Key tools include a Tap Hole Size Calculator, Bolt Diameter Guide, Tap Hole Forming Data, and Tap Hole Repair Values, all designed for precise thread-cutting calculations.

### Is Thread Calculators available on Android?

Based on the provided data, Thread Calculators is available on iPhone and iPad. Platform compatibility for Android is not specified.

### How often is Thread Calculators updated?

The latest version is 1.4, and the app was last updated on December 1, 2025. This indicates a recent update, suggesting active maintenance.

### What is the price of Thread Calculators?

Thread Calculators is a paid app priced at $1.99. This one-time purchase grants access to all its features.

### What is the age rating for Thread Calculators?

Thread Calculators has an age rating of 4+, making it suitable for a wide range of users, including younger individuals who may be learning about mechanical concepts.

### Does Thread Calculators have ads?

No, Thread Calculators does not contain advertisements. It is a paid application that offers an ad-free experience.

### What do users like about Thread Calculators?

With a rating of 5.0 stars from 1 rating, users likely appreciate the app's accuracy and comprehensive support for various thread standards, providing quick and reliable data.

## Version history (last 5 releases)

### 1.4 — 2025-12-01

- Improved thread calculators for higher accuracy
- Added missing thread standards and updated tables
- Enhanced tap hole, bolt diameter & repair calculators

### 1.3 — 2025-04-10

Improved Calculations

### 1.2 — 2024-04-25

improved calculation

### 1.1 — 2024-02-01

resolved decimal result issues

### 1.0 — 2023-02-10

No release notes.

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All apps by Kantaben Gorasiya: https://appshunter.io/developer/1640260396

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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 2026-08-01.*