Free tools
Cab tools
Ten free calculators for the cab: battery runtime, idle costs, cooler sizing, and more. No signup, just answers. Plus two bonus calculators from the Cab Math series.
Calculators
12V cooler battery-drain calculatorWill your cooler last the night on your batteries.
Cab comfort quizWhich upgrade pays off first for your cab.
Cab solar sizing calculatorSize a solar panel for your cab loads.
Cooler size pickerWhat size 12V cooler do you actually need.
Fridge battery runtime estimatorHow long your 12V fridge runs on your battery bank.
Heated blanket runtime calculatorWill the blanket make it to morning.
Heated jacket runtime calculatorRuntime from your jacket battery pack.
Inverter size calculatorSize the inverter for a sleeper cab.
Winter idle-fuel cost calculatorWhat idling through winter really costs you.
Winter idling payback calculatorWhen anti-idle gear pays for itself.
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