FREE PLANNING TOOLS
Every number, one clear workspace
Start with the question you need to answer. Every calculator shows its formula, keeps ratings separate, and works without an account.
NOT SURE WHICH TOOL TO OPEN?
Build the complete purchase decision first.
The Purchase Fit Report combines vehicle, trailer, hardware, tire and scale evidence, then sends you to the focused worksheet you need next.
Towing match
7 toolsComplete Tow Check
Compare payload, GVWR, GCWR, trailer, receiver and axle ratings in one transparent worksheet.
Open calculatorPayload
Calculate payload used by occupants, cargo, accessories, hitch hardware and trailer tongue or pin weight.
Open calculatorTongue Weight
Estimate a planning range and calculate measured tongue-weight percentage for conventional, utility and boat trailers.
Open calculatorFifth-Wheel Pin Weight
Estimate fifth-wheel or gooseneck pin load and compare it with truck payload, tow rating and GCWR.
Open calculatorCompare Tow Vehicles
Compare two candidate vehicles against the same loaded trailer, occupants, cargo and hitch assumptions.
Open calculatorHitch Rise / Drop
Compare loaded receiver height with a level trailer coupler and calculate the ball-mount rise or drop to investigate.
Open calculatorTruck Camper Payload
Build a loaded camper estimate from dry weight, options, water, propane, batteries, people and gear.
Open calculatorTrailer loading
7 toolsTrailer Payload
Estimate loaded trailer weight from dry weight, options, batteries, propane, water, supplies and cargo.
Open calculatorBoat + Trailer
Estimate total towing weight from hull, motor, trailer, fuel, batteries, gear and supplies.
Open calculatorToy Hauler Cargo
Estimate loaded toy-hauler weight after toys, water, batteries, propane, supplies and installed equipment.
Open calculatorWater Weight
Calculate fresh, gray and black tank weight in pounds and kilograms.
Open calculatorCargo WLL Planner
Calculate aggregate Working Load Limit (WLL) of tie-downs and verify securement requirements against cargo weight.
Open calculatorATV/UTV Trailer Load
Calculate total trailer weight, remaining payload capacity, and estimate tongue weight percentages based on machine positioning.
Open calculatorMotorcycle Load & Tie-Down
Check hitch carrier tongue limits, chock capacities, and tie-down Working Load Limits for hauling one or more motorcycles.
Open calculatorScale & tires
3 toolsScale Worksheet
Turn connected and tow-vehicle-only scale passes into actual trailer, hitch and axle loads.
Open calculatorTire & Axle Load
Compare a measured axle load with total tire capacity and the axle’s GAWR without combining those ratings.
Open calculatorAxle Restoration
Compare unhitched, hitched and adjusted scale passes to see how much front-axle load a weight-distribution hitch restores.
Open calculatorRV systems
5 toolsElectrical Load Planner
Build a daily watt-hour worksheet and keep energy use separate from simultaneous running and startup demand.
Open calculatorBattery Runtime
Estimate usable battery energy and runtime from amp-hours, voltage, usable depth and inverter efficiency.
Open calculatorSolar Sizing
Estimate solar watts required from daily energy use, effective sun hours and system losses.
Open calculatorGenerator Sizing
Estimate required generator output from simultaneous running loads and the largest additional startup surge.
Open calculatorPropane Runtime
Estimate appliance runtime from usable propane pounds and total BTU-per-hour demand.
Open calculator