CNC CALCULATORS
Machining Time Calculator
Estimate continuous cutting time from total cutting distance and feed rate.
Input parameters
Results update as you type.
CALCULATED RESULT
THE FORMULA
Time (minutes) = cutting distance (mm) ÷ feed rate (mm/min)
Convert the entered distance to millimeters first. Divide by feed rate for minutes, then multiply by 60 for seconds. This is constant-feed cutting time; rapid moves, acceleration, tool changes and setup are excluded.
These tools calculate the values you supply. They do not recommend tool, material or machine parameters.
Estimate constant-feed cutting time
Distance divided by feed
A 12000 mm path at 6000 mm/min takes 2 minutes of continuous constant-feed movement. A 100-inch path at 50 in/min also takes 2 minutes. Match distance and feed units.
What the time excludes
This is not a CAM cycle-time simulation. Setup, rapid moves, acceleration, corners, spindle transitions and tool changes are excluded. Use a real total cutting distance; a rectangle's area is not its toolpath length.