Precision in every calculation.

Machining calculators and reference tools for the decisions that matter. Clear results, useful diagrams, and the sources behind the numbers.

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Three-wire thread measurement calculatorThree-wire thread measurement calculator
Three-wire measurement on a phoneThree-wire measurement on a phone

The right tool for the job.

Machining calculators and references, organized for the way you work.

Tools you’ll come back to.

Practical calculations, clearly presented.

Fits and tolerances calculatorFits and tolerances calculatorFits and tolerances calculatorFits and tolerances calculator
Fits and tolerances

From nominal size to a precise fit.

Calculate limits, allowances, and clearances with a clear view of the dimensions and tolerances behind every result.

Ø30 H7/g6
clearance 0.0070 to 0.0410 mm
hole
30.0000 to 30.0210 mm
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Three-wire measurement calculatorThree-wire measurement calculatorThree-wire measurement calculatorThree-wire measurement calculator
Three-wire measurement

Thread measurement, made clear.

Calculate measurement over wires, select the appropriate wire size, and see the geometry behind the calculation.

#5-40 UNC 2A
best wire 0.01443 in
over wires
0.12731 to 0.12991 in
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Gear geometry calculatorGear geometry calculatorGear geometry calculatorGear geometry calculator
Gear geometry

Gear geometry, clearly defined.

Calculate essential gear dimensions and explore the geometry with clear diagrams and supporting calculations.

24T 10 DP
blank Ø2.6000 in, No. 5 cutter
index
15° per tooth
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The details behind the numbers.

More than a calculated result. Explore the formulas, technical references, and geometry that support your work.

Technical references

Established standards and published machining references.

Clear calculations

Formulas and supporting values you can examine.

Practical geometry

Diagrams that help connect the numbers to the part.

Your next calculation starts here.

Practical machining tools and references, ready when you need them.

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