3 calculators in this category
- Drilling Speed & Feed CalculatorMachinery's Handbook drilling practiceDrilling needs four numbers and this calculator produces all of them: the spindle speed that puts the outside corner of the…
- Tap Drill Size CalculatorASME B1.1 / ISO 68-1 thread geometryA tap does not cut a thread from nothing — it cuts a thread into a hole, and the hole diameter decides how much of the…
- Tapping RPM & Feed CalculatorPitch-synchronised feedTapping is the one operation where feed is not a choice. A tap advances exactly one thread pitch per revolution or it tears the…
Which one do you need?
- Drilling Speed & Feed Calculator
- Calculate drill RPM from surface speed and diameter, the penetration feed in in/min, the spindle torque and power, and the cycle time for each hole.
- Tap Drill Size Calculator
- Find the exact tap drill diameter for any percent of thread engagement on unified or metric threads, plus the nearest standard drill and the thread it gives.
- Tapping RPM & Feed Calculator
- Work out tapping spindle speed from surface footage and tap diameter, and the feed rate that follows from the thread pitch. Imperial and metric taps.