Wire calculator
SWG to mm Calculator
Convert Standard Wire Gauge (SWG) to approximate diameter in millimeters.
Wire calculator
SWG to mm Calculator
Instant result
Result
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Enter values to calculate.
How to use
Follow these steps for a clear answer.
Enter the known values
Fill in the fields for your calculation.
Choose a mode if available
Use the tabs when multiple directions are offered.
Read the result
The result updates as you type.
Frequently asked questions
Key distinctions behind the calculation.
How does the SWG to mm calculation work?
It uses the formula Approximate SWG → mm lookup curve.