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Wire calculator
Wire Gauge Chart
Reference AWG diameters with an interactive AWG → mm converter.
Wire calculator
Wire Gauge Chart
Instant result
Result
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Enter values to calculate.
How to use
Follow these steps for a clear answer.
Choose a mode if available
Use the tabs when multiple directions are offered.
Read the result
The result updates as you type.
Conversion reference
| AWG | Diameter (mm) | Area (mm²) | Typical ampacity (A) |
|---|---|---|---|
| 10 | 2.588 | 5.261 | 30 |
| 12 | 2.053 | 3.309 | 20 |
| 14 | 1.628 | 2.081 | 15 |
| 16 | 1.291 | 1.309 | 10 |
| 18 | 1.024 | 0.823 | 7 |
i Ampacity values are typical copper, ambient-dependent.
Frequently asked questions
Key distinctions behind the calculation.
How does the Wire Gauge Chart calculation work?
Enter the known values and the calculator applies the standard relationship.