Machine Shop Calculator

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