Machine Shop Calculator
H3 Apps, LLC
About this app
- Age 10
- Updated Jan 10, 2022
- OS IOS
Editor reviews
Machine Shop Calculator is a fast, practical tool for machinists, CNC programmers, and manufacturing students. Quickly compute feeds and speeds, pick the right drill and tap sizes, and solve everyday shop math without spreadsheets or guesswork. Ideal for on-the-floor decisions, training, quoting, and quality checks.
Core features
- Feeds and speeds calculator with material presets and tool parameters for milling, turning, and drilling
- Thread, drill, and tap charts plus bolt circle, right-triangle/trig, and common geometry calculators
- Shop utilities including unit conversion, surface finish estimates, tolerance and fit reference, and machining time and cost estimates
Why it stands out
- Fast and accurate results tailored to real shop workflows
- Clear inputs and outputs that reduce errors and setup time
- Useful for both education and business, from apprentices to production teams
Keywords: machine shop calculator, feeds and speeds, CNC machining, milling, turning, drill size chart, tap drill, bolt circle calculator, trig calculator, unit converter, machining time estimator, GD&T reference, tolerances and fits
Screenshots
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How to use:
1. Download and install, then open the app and choose your default units and materials.
2. Select a calculator such as Feeds and Speeds, Drill/Tap, Bolt Circle, or Geometry.
3. Enter key inputs like machine type, tool diameter, flute count, workpiece material, and desired surface speed or chip load.
4. Review the results for RPM, feed rate, hole patterns, or dimensions, then apply them to your machine or program; save or share if needed.
5. Explore advanced options by adding custom tools and materials, using the time and cost estimator for quotes, and bookmarking frequent setups for faster repeat jobs.