Automotive & Towing Suite
Automotive & Towing Tools & Calculators
Trailer sway physics engines, tongue weight meters, and EV energy tools. Practical tools designed for everyday technical and professional workflows.
automotiveUpdated 2026-10-26
CAT Scale Trailer Tongue Weight & WDH Restoral Calculator
Calculate exact trailer tongue weight, gross trailer weight, and SAE J2807 Front Axle Load Restoral (FALR) from CAT Scale 2-pass and 3-pass tickets. Includes sway risk meter and payload checks.
Open Tool
automotiveUpdated 2026-10-27
Camper Van & RV Solar/Battery System Architect
Size rooftop solar panels, LiFePO4 lithium battery banks, MPPT charge controllers, and pure sine inverters with real-time power flow simulation and ABYC wire gauge safety.
Open Tool