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Electrical Wire Size Calculator

This should be used as a reference only. Please check with your electrical inspector or a licensed electrician for the proper wire size. There are many factors to consider before choosing the proper gauge.

wire size

wire size


Having some issues with the calculator right now. I’m trying to fix it now. 3-1-17 Dominick. Somehow the one I had stopped working.

Calculated Industries 8510 Home ProjectCalc Do-It-Yourself Project Calculator

Great for do-it-yourselfers, woodworkers, hobbyists, decorators and gardners
Enter feet-inch-fractions without changing to decimals
Use it to estimate quantities and costs for paint, concrete, tile, wallpaper and carpet

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Price: $17.08 $14.97

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Wire Size

Required Data Entry

Wire Type



Circuit Phase

Single Phase

Three Phase

Circuit Voltage






One Half The Total Circuit Length

Total Circuit Amperage


Calculated Results
Required Minimum Wire Size