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12 Volt Wire Size Calculator

Calculate the recommended AWG wire size for 12V circuits. Considers current, voltage, and wire length with voltage drop analysis.

Local processing
Recommended: AWG 14 (copper, 75°C)
Power: 240 W
Est. voltage drop: 364.9%
⚠ Voltage drop exceeds 3%, consider thicker wire or shorter run

How to Use

Enter your input above. The result updates automatically. Use the copy button to copy the result.

Privacy

All processing happens in your browser. Your data is never uploaded to any server.

FAQ

Is this 12 Volt Wire Size Calculator free?

Yes, completely free. No signup required.

Does this tool upload my data?

No. All processing happens locally in your browser. Your data never leaves your device.

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