Calculator’s Categories Advanced General Machining Milling Turning Unit Conversions Carbide Grades Additional Calculators ADVANCED CALCULATORS SpeeDoctorAdvanced Speed & Feed Calculator ThreaDoctorAdvancedThread Calculator MILLING CALCULATORS Basic Milling CalculatorsOnline calculators for Basic Milling formulas Chip Thinning CalculatorRadial and Axial Chip Thinning Calculators.Formulas and explanations for different cases. Chip Load CalculatorGet Chip Load recommendations per Raw Material and Milling cutter Diameter. Cut Depth OptimizerCalculate the Optimal Depth of Cut for vibration-free milling. TURNING CALCULATORS Basic Turning CalculatorsOnline calculators for Basic Turning formulas Surface Finish CalculatorOnline calculators and charts for Turning Surface Roughness Knurling CalculatorOnline calculator for diameters and cutting conditions for Knurling FacingFacing, Parting Off & Grooving Cycle Time Calculator GENERAL MACHINING CALCULATORS Metal Removal Rate CalculatorMRR Calculators and formulas for Milling, Turning, and Drilling Machining Power CalculatorCutting Power Calculators and formulas. for Milling, Turning, Drilling, and Grooving UNIT CONVERSION CALCULATORS Hardness ConverterGrade Comparison Tool. Find out the difference between the two grades and get our Compatibility Score Ra to RzConvert Surface Finish from Ra to Rz and from Rz to Ra Inch Decimal/FractionConverts inch values between fractional and decimal notations. SFM to RPMConvert Surface Feed per Minute to Spindle Speed (RPM) Imperial to MetricConvert Machining terms(Cutting speed, feedrate, etc.) from Inch to mm units Metric to ImperialConvert Machining terms(Cutting speed, feedrate, etc.) from metric to Inch units RPM to SFMConvert Surface Feed per Minute to Spindle Speed (RPM) CARBIDE GRADES CALCULATORS Grades WizardThe Machining Doctor’s unique algorithm will list the best grade from each brand for a given application! Grades ConverterGet a list of the closest alternative grade from all other brands, with our Compatibility Score for each one. Grades ComparerGrade Comparison Tool. Find out the difference between the two grades and get our Compatibility Score Additional Calculators Sine Bar CalculatorSine Bar Calculator and Formulas Drilling CalculatorsOnline calculators for Drilling formulas True Position CalculatorTrue Position Calculator and Formulas Tap Drill SizeOnline Tap Drill Size Calculator (Based on Thread Depth)