Towing Capacity, Tongue Weight & Real Payload Calculator (SAE J2807)
Calculate true remaining vehicle towing capacity, downward tongue weight (recommended 10-15%), and safe tow vehicle payload margin to prevent hazardous highway trailer sway.
Trailer Tongue Weight
Calculator Inputs
Trailer Tongue Weight
Remaining Tow Vehicle Payload Margin
Remaining Available Towing Capacity
Payload Used
Tow Vehicle Payload Usage: Passengers/Cargo vs Trailer Tongue Weight (kg)
Compliant with SAE J2807 tow test standards and manufacturer Gross Combined Weight Ratings (GCWR).
This calculator is designed for educational and informational purposes based on publicly declared statutory frameworks. The outputs do not constitute binding financial, tax, or legal advice. We assume no liability for decisions made based on these estimates. Always verify with the relevant official authorities or a certified professional advisor.
Calculation Methodology
Tongue Weight = Loaded Trailer Weight * (Tongue % / 100). Total Payload Used = Passengers + In-Cab Cargo + Tongue Weight. Remaining Payload = Max Vehicle Payload - Total Payload Used.
Frequently Asked Questions
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