Wire Gauge Calculator
Wire AWG from current capacity and voltage drop.
Inputs
%
Results
Recommended AWG
14
Voltage Drop (V)
0.25
Wire Diameter (mm)1.63
Voltage Drop (%)2.07
Voltage at Load (V)11.75
Total Wire Resistance (Ω)0.05
Power Loss (W)1.24
Wire Max Current (A)32
Required Area Mm21.44
How to Use This Calculator
- Enter the circuit current (A), system voltage (V), and one-way wire length (m).
- Set the maximum allowable voltage drop (%) — typically 2–3% for power circuits.
- Review the recommended AWG gauge, wire diameter (mm), and actual voltage drop.
- Verify the voltage at the load meets your minimum operating requirement.
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