Calculate Pitch Circles

Calculate bolt circles with up to 3000 equally spaced points and up to 36 variably spaced points. The centre of the circle can be X0Y0 or any other coordinates.
The bolt circle coordinates can be saved for pasting into a CNC g-code file, or printed to a hard copy.
All values, including the answer, can be converted between inch and millimeters.

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Trades Math Calculator, including the bolt circle calculator, 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 use trigonometry to calculate hole positions, chamfers, sine bar stacks, dovetail measurements, bolt circles, etc. 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. On the other hand, you can use the Trades Math Calculator fast, easy and accurate and affordable.
Equally spaced bolt circle calculator

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.