TEN FREE PLANNING TOOLS
Run the numbers.
Then get on with your life.
No account, no data upload. All ten tools run locally in your browser and spell out their limitations.
SNOW & ROAD
Three new practical calculations.
FREE PLANNING CALCULATOR
Trailer payload sanity check
Subtract the trailer’s actual empty weight and real cargo from GVWR. A dimensional fit is a separate question.
Open tool ↗FREE PLANNING CALCULATOR
Tow vehicle payload worksheet
Make occupants, gear and loaded tongue weight visible against the door-jamb payload figure.
Open tool ↗FREE PLANNING CALCULATOR
Fuel-cost difference estimator
Compare two fuel economy estimates across the same miles, without pretending the math includes vehicle ownership.
Open tool ↗ON WATER
Seven original boating calculators.
ENERGY TOOLBattery runtime estimatorTurn volts, amp-hours and real average watts into an estimated number of hours. See why standby loads matter.↗ENERGY TOOLSolar and battery budgetEstimate daily harvest from panel watts, peak sun hours and an explicit performance factor.↗FITMENT TOOLTrolling shaft measurement helperRecord mounting-surface height and browse published Minn Kota bow-mount shaft-length ranges.↗FITMENT TOOLBoat-cover fit worksheetCreate a copyable record of centerline, beam and accessory projections before you buy canvas.↗GEOMETRY TOOLAnchor scope calculatorCalculate anchor rode from water depth, bow height, and scope ratio. The bow is part of the triangle.↗PLANNING TOOLOnboard electrical load plannerAdd common onboard appliances to estimate daily watt-hours, peak watts and baseline battery capacity.↗ELECTRICAL TOOL12/24 V wire voltage-drop explorerExplore how current, copper wire length and gauge affect calculated DC voltage drop—without pretending this sizes a safe circuit.↗