Tap & Drill Size Reference vs Tap & Drill Pro

Standing at the mill and can't remember the right drill size for an M8x1.25 tap? This app gives you the answer faster than flipping through a chart book. Select thread type (UNC, UNF, Metric), pick your size, and instantly see the recommended tap drill, clearance drill, thread percentage, and decimal equivalent. No searching, no guessing. TAP DRILL CALCULATOR: Select thread standard and size to get tap drill size, clearance drill, and thread percentage. Covers M3 to M24 metric, #0 to 1 inch imperial. DRILL CHART: Full reference table with tap drill, clearance drill, and thread percentage for every common size. One-tap lookup. THREAD SPECIFICATIONS: Detailed data for each size: pitch, threads per inch (TPI), major diameter, minor diameter, and pitch diameter for UNC, UNF, and ISO Metric standards. FAVORITES: Save your most-used tap and drill combinations for instant access on repeat jobs. Works completely offline. No account required. Built for machinists, CNC operators, and fabrication shops who need fast, accurate thread data at the machine.

Tap & Drill Pro Calc is a precise and reliable calculator designed for machinists, engineers, and workshop professionals. Quickly determine the correct tap sizes, drill sizes, and thread specifications for your projects. Whether you're working in manufacturing, metalworking, or DIY machining, this app simplifies complex calculations and helps reduce costly errors. Key Features: • Tap size calculator for accurate threading • Drill size recommendations for multiple standards • Supports metric and imperial units • Fast and easy-to-use interface • Designed for machinists, engineers, and students • Improves accuracy and efficiency in workshop tasks Get the right measurements every time and streamline your workflow with Tap & Drill Pro Calc.