How does the Screw Thread Converter Calculator work?

Metric: M10 = 10 mm diameter, coarse (1.5 mm pitch) or fine (1.25 mm) Then: Inch: #10-24 UNC = 10 size, 24 threads/inch Then: Non-interchangeable between systems (need washers, adapters).

Can you give an example of how to use the Screw Thread Converter Calculator?

Example: Input M8 metric thread gives a result of 8 mm diameter, UNC equivalent #5-40, similar size (Not exactly interchangeable).

Is the Screw Thread Converter Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Screw Thread Converter Calculator?

Our Screw Thread Converter Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Conversions

Screw Thread Converter Calculator

Screw Thread Converter

Screw thread converters translate between different thread designations: UNC, UNF, metric (M), BSW, etc.

Symbol	Name	Unit	Description
UNC	10 size	—	10 size

Difficulty:intermediate

References

›Screw Thread Converter — Wikipedia

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Screw Thread Converter Calculator

Screw Thread Converter

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