Marine Electrical Tools provides fast, accurate, ABYC‑compliant calculators for boat wiring, voltage drop, battery sizing, and marine electrical system design. Our tools are built for both DIY boat owners and marine professionals who need reliable, standards‑based results without the guesswork.
Fast, accurate calculators for boat wiring, voltage drop, battery sizing, and marine electrical system design.
Popular Marine Electrical Tools/Calculators
Note: Calculations are estimates based on ABYC standards. View Full Disclaimer
Voltage Drop Calculator
Calculate voltage drop across DC circuits using wire size, length, and current.
Marine Wire Gauge Calculator
Determine the correct wire gauge based on current, length, and acceptable voltage drop.
Circuit Breaker Size Calculator
Determine the correct circuit breaker size based on wire gauge, load current, and ABYC safety guidelines.
Fuse Size Calculator
Calculate the correct fuse size based on wire gauge, circuit load, and ABYC safety recommendations.
Battery Bank Size Calculator
Estimate the required battery bank capacity based on daily energy usage, system voltage, and depth‑of‑discharge limits.
Inverter Size Calculator
Calculate the required inverter size based on AC appliance loads, surge requirements, and battery bank capacity.
Solar Panel Size Calculator
Estimate the required solar panel wattage based on daily energy usage, battery capacity, and available sunlight hours.
Solar Charge Controller Size Calculator
Determine the correct solar charge controller rating based on panel wattage, system voltage, and charging current.
Shore Power Load Calculator
Calculate total AC shore power demand based on appliances, inverter‑charger loads, and available dockside amperage.
Generator Size Calculator
Determine the appropriate generator size based on AC load requirements, surge demands, and charging needs.
Alternator Charge Rate Calculator
Estimate alternator charging output based on engine RPM, alternator rating, and regulator type.
Battery Charger Size Calculator
Determine the correct battery charger size based on bank capacity, chemistry, and recommended charge rates.
Our interactive Marine Voyage Power & Range Calculator:
Designed to take the guesswork out of your trip planning by providing real-time estimates for travel time and energy consumption.
Marine Anode Calculator
Prevent galvanic corrosion and protect your underwater hardware. Our calculator helps you choose the right sacrificial anodes based on your hull material and water salinity to ensure your vessel stays shielded from costly metal degradation.
Florida Keys Fishing Hotspots Tool
Stop guessing and start catching with our real-time Florida Keys Fishing Intelligence dashboard. We’ve combined live NOAA sensor data, tide trends, and proprietary bite indexes to give you a professional-grade forecast for the Middle Keys. From the 7-Mile Bridge to the offshore humps, get the data you need for a safe and productive day on the water.
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