Cable Size Calculator
Fast and accurate cable size and voltage drop calculator based on NEC standards.
About Cable Size Calculator
Cable Size Calculator is a fast, accurate, and easy-to-use tool for electrical contractors, solar PV installers, engineers, and DIY enthusiasts to quickly determine safe wire gauge (AWG / mm²) and voltage drop.
Key Features:
• Accurate Cable Sizing: Calculate required wire size based on current (Amps), voltage, circuit type, and distance.
• Voltage Drop Calculation: View exact voltage drop percentage and power loss in real time.
• Copper & Aluminum Support: Toggle instantly between Copper and Aluminum conductors.
• Circuit Flexibility: Supports DC, Single-Phase AC, and 3-Phase AC circuits.
• Advanced Electrical Rules: Optionally apply NEC 125% continuous load rules, target voltage drop limits (1% to 5%), and conductor insulation temperature ratings.
• Simple & Clean UI: Designed for fast field calculations without complicated clutter.
Download Cable Size Calculator today for fast, reliable, and compliant electrical wire calculations!
