Drill Charts and Countersink Calculations

The Speed and Feed and Countersink applications in Trades Math Calculator include convenient drill charts. These charts enable you to calculate cutting speeds and drill point calculations without having to go to reference books or charts.
Even if you don't need the calculations the charts are easy to access just for lookup purposes.

These are the drill charts currently included:

  • Tapping drill charts for inch and metric threads, including roll threads and pipe threads.
  • Decimal equivalents for fractional, letter and number inch system drills
  • Drill point and countersink depth. Easily calculate depth to drill for full diameter depth, or depth of countersink for a specified diameter
  • Convert all values between inch and millimeters

Download your FREE thirty day trial of
Trades Math Calculator, including the drill charts, now.
The Trades Math Calculator has been developed to quickly solve common machine shop and other trades trigonometry and math problems at a price every trades person can afford! As a machinist or CNC programmer, you often have to leaf through reference books, drill charts, speed and feed tables, thread wire charts and so on to find the information you need. You often have to use trigonometry to calculate hole positions, chamfers, sine bar stacks, dovetail measurements, bolt circles, etc. On the other hand, you can use the Trades Math Calculator fast, easy and accurate and affordable.

This software was developed by machinists for machinists. We all learned our maths formulas as apprentices, but unless we're constantly using them, how easy is it to forget! Even those of us using trig often appreciate the quick and easy way to find the answers using the trig functions in Trades Math Calculator.
Thirty day fully functional trial period of the trigonometry calculator ensures satisfaction!

Drill point calculations, countersink depth calculations

Decimal equivalents of inch drills

Tapping drills for inch and metric, pipe threads and roll taps