Wire Gauge Calculator
Find the correct wire gauge AWG for any current load.
You might also need
How It Works
Find the correct wire gauge AWG for any current load. Enter your values and press Calculate for instant results with a full formula breakdown.
Formula
AWG from NEC ampacity tableQuick Reference
Common calculations — results you can verify instantly.
20A circuit
NEC standard
12 AWG minimum
15A circuit
NEC standard
14 AWG minimum
30A circuit
NEC standard
10 AWG minimum
Related Calculators
Slope Calculator
Find the slope, angle, and equation of a line.
Distance Calculator
Find the distance between two points on a coordinate plane.
Power Factor Calculator
Calculate power factor and reactive power for AC circuits.
Power Triangle Calculator
Solve the power triangle: real, reactive, and apparent power.
Voltage Divider Calculator
Calculate output voltage of a resistor voltage divider.
Electricity Cost Calculator
Calculate electricity cost for any appliance by wattage.