Marine & RV Calculators

Boat and RV batteries, wiring, solar, fuel and props.

AhBoat & RV Battery Bank CalculatorHouse bank Ah from daily use and days off-grid.AWGMarine Wire Size CalculatorAWG for 12/24 V boat circuits using ABYC 3% or 10%.WBoat & RV Solar CalculatorSolar watts and panels for RV, van or boat.nm · miBoat Fuel Range CalculatorRange, hours and nmpg from tank, GPH and speed.% · mphPropeller Slip CalculatorProp slip % or estimated speed from pitch and RPM.knotsHull Speed CalculatorMax displacement speed from waterline length.ftAnchor Rode & Scope CalculatorRode length and swing radius for any scope.lbTrailer Tongue Weight CalculatorTarget tongue weight and hitch check.