Machinist Math Tricks and Formulas

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I have listed some machinist math tricks and formulas on this page to help you do some day to day shop calculations. These are easy to do and easy to remember. They are not what you struggled with in school. These are little math tricks and short cuts you will find very useful.

I remember just starting out in this trade I would be using charts and punching the buttons off my calculator trying to get a dimension I needed off a blue print when some grouchy old journeyman would walk up to me and say “Look here son do it this way” and I would think to myself “dang why didn’t my teacher tell me this”

I will be adding more of these little tricks as I go along so book mark this site so you can use it as a future reference.

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Free Useful Math Formulas

To find size of round stock needed to machine a hexagon, D = 1.1547 x distance across the flats

To find size of round stock needed to machine a square, D = 1.4142 x distance across the flats

To find the area of a square, square one side

To find the area of a rectangle, multiply length time’s width

To find the volume of a cube, multiply length time’s width times depth

To find the volume of a square prism, multiply length time’s width times depth

To find the volume of a cylinder, multiply times radius squared times height

To find the area of a triangle, multiply base times height divided by 2

To find the area of a ring, subtract the area of inside diameter from the area of the outside diameter.

Machinist Guide Recommendation

This is a book from Amazon that's full of easy math calculations applied to metal working. They have them new for around $15.00 but I noticed they offer them used as low as $ 2.00 The information in this book is well worth the price. Very useful math tricks for machinist, toolmakers, sheet metal worker's or anyone in the metalworking trade.

Book mark us now ! We up date our recommendations often

Practical Mathematics for Metalworking...

William E. Hardman...

Best Price $1.99
or Buy New

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