Wire Gauge Calculators
Calculate wire size, ampacity, resistance, voltage drop and more with our easy tools.
Accurate ResultsIndustry standard formulas for precise calculations.
Safe & ReliableChoose the right wire size for safe installations.
Save TimeFast calculations for all your electrical projects.
Free to UseAll wire gauge calculators are 100% free.
Popular Wire Gauge Calculators
Wire Ampacity Calculator
Calculate the ampacity based on its gauge, material & type.
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Voltage Drop Calculator
Calculate voltage drop in a wire for DC or AC circuits.
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Wire Resistance Calculator
Find the resistance of a wire by length, gauge and material.
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AWG to mm² Calculator
Convert American Wire Gauge (AWG) to square millimeters (mm²).
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mm² to AWG Calculator
Convert square millimeters (mm²) to American Wire Gauge (AWG).
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Temperature Rise Calculator
Calculate temperature rise based on current and wire size.
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Parallel Conductor Calculator
Determine equivalent ampacity for parallel conductors.
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Conduit Fill Calculator
Calculate the maximum number of wires in a conduit.
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kVA to Amps Calculator
Convert kilovolt-amps (kVA) to amps for single or three phase.
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Power Loss Calculator
Calculate power loss in a wire based on current and resistance.
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Wire Size Chart
View standard wire gauge table, ampacity, resistance and sizes.
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NEC Wire Ampacity Table
View NEC standard ampacity table for copper and aluminum wires.
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Why Correct Wire Size Matters?
Prevent OverheatingRight wire size reduces the risk of overheating.
Ensure SafetyProper sizing helps prevent fire and electrical hazards.
Save EnergyMinimize voltage drop and power loss.
Code CompliantMeet NEC standards and electrical codes.
Disclaimer: These calculators are for informational purposes only. Results may vary. Please consult a licensed electrician for critical applications.