Cutting parameters calculator
Convert cutting speed into RPM, feed and material removal rate for milling, drilling and turning.
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Calculators, generators and practical tools for everyday CNC work.
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Cutting data & time
CNC Cycle Time and Cost Calculator
Estimate cycle and batch time plus machine, labor, tooling, material and good-part cost.
Ball-nose Effective Diameter Calculator
Calculate Dcap, RPM for target cutting speed and feed from tip depth or contact angle.
Scallop height calculator
Choose stepover from theoretical ball-end cusp height or calculate height from stepover.
Threads & holes
CNC tapping calculator
Calculate synchronized feed, pitch, TPI, approximate tap drill and travel time for metric and imperial threads.
Thread Milling G-code Generator
Calculate the cutter-center path, corrected feed rate and helical interpolation code for an internal thread.
PCD and CNC code generator
Calculate coordinates for holes on a bolt circle and generate example code for popular CNC controls.
Chamfer and countersink calculator
Calculate edge-chamfer depth, hole-countersink geometry and chamfer-mill plunge including a flat tool tip.
Geometry & orientation
Fit and tolerance calculator
Calculate limit sizes, clearance or interference from hole and shaft deviations.
Taper angle and ratio
Calculate taper angle, diameter, length and 1:n ratio for straight taper geometry.
XY coordinate rotation
Rotate a point about any centre and inspect coordinates, matrix and geometry preview.
5-axis vector tools
Convert IJK vectors, tilt, azimuth and angles between orientations.
NC code & cycles
G2/G3 Arc Centre and I/J Calculator
Find the centre, radius, sweep and arc length, then generate a G2/G3 block using I/J or R.
NC Code Checker
Check basic structure, modal states and common oversights in an NC program.
SINUMERIK cycle decoder
Read CYCLE81–89, CYCLE840 and CYCLE800 parameters, including several pasted calls at once.
Engraving generator
Create a simple single-line marking path and example ISO code.
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CNC knowledge
Practical explanations of cutting data, milling strategies and machining time.
01 · Cutting dataSpindle speed and feed
Cutting speed, diameter, flute count and chip load in one clear calculation.
Read the guide → 02 · MillingRadial chip thinningWhy low radial engagement reduces the actual maximum chip thickness.
Read the guide → 03 · Cycle timeCNC machining timeMove from toolpath length and feed rate to a realistic cycle estimate.
Read the guide →