TONGUE WEIGHT CALCULATOR — VERIFY TOW CAPACITY NOW
Enter your trailer and vehicle details. Verify tongue weight and towing capacity in under 60 seconds.
Tongue Weight Calculator — Keep Your Trailer Setup Safe and Legal
Too little tongue weight and your trailer fishtails. Too much and your rear tyres lose traction. Know the number before you tow.
Enter your trailer’s gross weight. The calculator returns the ideal tongue weight range (10–15% of GTW) and checks it against your hitch and truck ratings.
Incorrect tongue weight is the primary cause of trailer sway accidents. SAE J2807 and FMCSA both cite tongue weight as a critical towing safety variable.
Anyone towing a trailer, caravan, boat, or equipment with a rated hitch.
- SAE J2807 tongue weight guidelines
- FMCSA towing safety standards
- NHTSA trailer sway data
CALCULATOR
Disclaimer: This tool is provided for educational and informational purposes only and does not constitute legal, safety, or professional advice. Sunferno Automotive Accessories cannot verify how products are installed, used, or attached in your specific vehicle or situation — proper installation, use, and securement are solely the responsibility of the user. Laws and regulations vary by jurisdiction and change over time; always confirm current requirements with your local authorities or a qualified professional. Sunferno products must be used strictly in accordance with manufacturer instructions and applicable regulations.
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