CNC Calculators

The drawing of a sheet-metal part gives the outside dimensions of the bent part, but what the laser, shear or punch has to cut is ... Read more

"What should my machine's hourly rate be?" is the question every job shop asks, and most answer it with the number the shop next door ... Read more

Every CNC quote has to answer two questions: what does this part cost us, and what price do we give the customer? This CNC machining ... Read more

Work out theoretical Ra from nose radius and feed, find the feed for a required Ra, convert Ra to Rz and get the correct cut-off setting for measuring.

Calculate taper angle, taper ratio, chamfer dimensions and right triangles for CNC turning and milling. Half angle, included angle and DMS output.

What steel is 1.2344? What is the equivalent of 4140? Type the code and see the EN material number, EN name, AISI, JIS and AFNOR equivalents. 34 common grades.

What is 45 HRC in HB? Convert between HRC, HB and HV, and calculate HBW from a Brinell indentation or HV from Vickers diagonals. Includes a tempering hardness table.

Pick a diameter, a hole class and a shaft class to get clearance, interference and fit type instantly. 1–500 mm, H7/g6 to H7/p6, plus a bearing seat fit guide.

Calculate the smallest and largest acceptable hole size from diameter and IT grade. Full IT5–IT13 table and how to read H7/H10, in plain shop language.