# CNC Machinist Calculator +

> Speeds, Feeds & Tap Drill

Canonical page: [https://chrome-stats.com/d/id6790015946](https://chrome-stats.com/d/id6790015946)

## Overview

- **ID:** `id6790015946`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** heekyung moon
- **Category:** Utilities
- **Version:** 1.3.3
- **Last updated:** 2026-08-06
- **First published:** 2026-07-20
- **Size:** 53 MB
- **Data as of:** 2026-09-04
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/cnc-machinist-calculator/id6790015946)
- **Website:** [https://janey-moon.blogspot.com/](https://janey-moon.blogspot.com/)
- **Privacy policy:** [https://sites.google.com/view/cnccalcsss](https://sites.google.com/view/cnccalcsss)

## Description

Speeds and feeds, tap drill sizes and bolt-circle coordinates in one shop calculator — imperial or metric, works offline.

▶ Every shop calc in one app. Get speeds and feeds, tap drill sizes and bolt-circle coordinates without flipping through charts or paying for a locked-up tool.

▶ Speeds & feeds, both ways. Pick a material and enter tool diameter and flute count for RPM, cutting speed and feed rate — or work it backward from RPM. Switch imperial and metric anytime.

▶ Tap drill in seconds. Choose a metric or unified thread and get the tap drill size with the nearest standard drill, plus a thread-percentage slider for tight or loose fits.

▶ Bolt circle coordinates. Enter hole count, diameter and start angle for an X/Y table you can copy row by row straight into the control, with a quick preview.

▶ Reference built in: material speed presets, a number/letter/fraction/metric drill chart, point-depth and surface-finish cards.

Recommended speeds are a starting point, not a final spec. Tune to your machine, tooling and material, and follow your tooling maker's data.

## Rankings

- #1,173,977 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6790015946)