Engineering Tools & Calculators
Free interactive tools for wire and connector engineering.
Looking for definitions instead? Check the Connector & Cable Glossary.
Connector Selector Wizard
Answer a few quick questions to get a tailored connector type recommendation with links to relevant guides.
Voltage Drop Calculator
Calculate voltage drop for a wire run based on gauge, length, and current.
AWG to mm² Converter
Convert between American Wire Gauge and metric cross-sectional area.
Circular Mils to mm² Converter
Convert wire cross-sectional area between circular mils and mm².
Wire Weight Calculator
Estimate wire weight by gauge, length, and conductor material.
Power Dissipation Calculator
Calculate heat loss in a wire run using P = I²R.
Connector Derating Calculator
Estimate a connector’s derated current rating for your actual operating ambient temperature.
Skin Effect Calculator
Calculate skin depth for copper and aluminum conductors at any frequency.
Ohm's Law Calculator
Solve for voltage, current, or resistance given any two values.