Wire Size Calculator — AWG Wire Gauge for Amperage and Distance
Enter amperage, voltage, and wire run distance to calculate minimum AWG wire gauge (NEC compliant).
Circuit Details
One-way distance
How to Use the Wire Size Calculator
Enter amperage, voltage, and wire run distance to calculate minimum AWG wire gauge (NEC compliant).
This free online wire size calculator is designed for electricians and field technicians who need fast, accurate results on the job or during the estimating process. No account required — enter your values and get results instantly.
When to Use This Tool
- 1.During new construction estimates and material takeoffs
- 2.When verifying calculations in the field before ordering materials
- 3.For proposal and quote preparation — give clients accurate numbers
- 4.As a cross-check against manual calculations or software output
- 5.For training new technicians on correct sizing procedures
Important Notes
Results from this wire size calculator are estimates based on standard industry formulas and typical conditions. Always verify critical calculations with manufacturer specifications, local codes, and a licensed electrician before proceeding with installation or ordering materials. Actual requirements may vary based on local building codes, site conditions, and project-specific factors.
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