When to use this calculator
Combine estimated machining time with an hourly rate and extra costs. The entered rate determines which overhead and labour costs are covered.
Explore the machining feeds, speeds & time calculators for other questions in this topic. For a related calculation, use the Machining Time Calculator: Estimate feed-motion time for a machining pass.
PUTTING IT INTO PRACTICE
Machining Cost: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Machine hours | 2.5 |
| Entered hourly machine rate | 60 |
| Materials and other entered cost | 40 |
| Result | 190 currency units |
- Check the input labels and enter the example values above.
- Apply the relationship: Estimated cost = machine hours × hourly rate + other costs.
- The result is 190 currency units, rounded for display.
How to interpret your result
The entered rate determines which overhead and labour costs are covered.
Choose cutting speeds and feeds from suitable tooling and material guidance. These tools translate quantities rather than selecting safe cutting conditions. Effective diameter, engagement, machine limits and setup time need separate attention.
Frequently asked questions
Does the spindle-speed calculation recommend a cutting speed?
No. You supply the cutting speed. The tool converts it and a diameter into revolutions per minute.
When is the machining cost calculator useful?
Combine estimated machining time with an hourly rate and extra costs. The entered rate determines which overhead and labour costs are covered.
How do I use the machining cost calculator?
Enter machine hours, entered hourly machine rate, materials and other entered cost. The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Estimated cost = machine hours × hourly rate + other costs.
What should I check before using the result?
The entered rate determines which overhead and labour costs are covered.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
Further reading
For background on this topic, see Sandvik Coromant: machining formulas and definitions ↗. This is a topic reference, not an external review or endorsement of this tool.
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