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Initial release.
Wire gauge calculator: check ampacity, voltage drop, and convert AWG to mm².
Wire Gauge & AWG Calculator is a fast, accurate electrical engineering tool designed for electricians, automotive technicians, solar installers, and DIY builders. Quickly size copper and aluminum conductors, calculate full-loop voltage drop, determine maximum allowable ampacity, and convert seamlessly between American Wire Gauge (AWG), Standard Wire Gauge (SWG), metric cross-sectional area (mm²), and conductor diameter. KEY FEATURES: • WIRE SIZE CALCULATOR Enter your circuit current (amperes), voltage, one-way distance (meters or feet), and conductor material to get an instant wire gauge recommendation. The sizing engine calculates conductor resistance, evaluates full-loop circuit voltage drop against your target threshold (default 3%), and ensures thermal ampacity safety limits are strictly respected. • VOLTAGE DROP & POWER LOSS ANALYSIS Inspect total voltage drop in volts and percentage, load end voltage, power dissipation (watts), and loop resistance. Test different conductors and materials to keep voltage drop within safe, efficient tolerances. • AWG, SWG & METRIC CONVERTER Convert between American Wire Gauge (AWG), British Standard Wire Gauge (SWG), metric area (mm²), and conductor diameter (mm and inches). Seamlessly translate specifications across imperial and metric standards. • COMPREHENSIVE AMPACITY REFERENCE CHARTS Access detailed ampacity lookup tables for standard wire sizes ranging from heavy 4/0 (0000 AWG) power feeders down to thin 40 AWG signal leads. Review rated copper and aluminum current carrying capacity, circular mils, cross-sectional area, and resistance per kilometer. • CONDUCTOR MATERIAL COMPARISON Switch effortlessly between copper and aluminum conductors to visualize how resistance, thermal ampacity, and required conductor size change for your specific electrical installation. • SAVED WIRES & CALCULATION HISTORY Save frequently referenced wire gauges, bookmark custom cable recommendations, and revisit recent calculations with a single tap. Designed for automotive wiring, solar PV arrays, marine systems, home electrical projects, audio power cables, and industrial equipment.