Machining Calculators
These machining calculator tools work out lathe drilling and operation cutting time and turning surface roughness.
Turning Surface Roughness Calculator
This surface roughness calculator estimates the theoretical Ra of a turned surface from the feed rate…
Open calculator MachiningLathe Cutting Time Calculator
This lathe cutting time calculator finds the machining time for a turning or boring pass from…
Open calculator MachiningLathe Drilling Time Calculator
This lathe drilling time calculator finds how long it takes to drill a hole from the…
Open calculatorAbout Machining Calculators
These machining calculator tools work out lathe drilling and operation cutting time and turning surface roughness. Choose a tool below for an instant, shop-ready result with the formula and a worked example.
Cycle time and finish drive machining cost and quality. These tools apply the speed, feed, and geometry relationships so you can plan operations accurately.
Calculators in this category
Frequently Asked Questions
What can I calculate for machining?
Lathe drilling time, lathe operation cutting time, and turning surface roughness. Each tool covers one task with its formula and a worked example.
Are these tools free to use?
Yes. Every calculator on this page is free, needs no signup, and works in your browser on mobile and desktop.
Do the tools use speed and feed?
Yes. Each page states the equation, defines speed, feed, and tool geometry, and includes a numeric example.