Tongue weight · Gooseneck / 5th-wheel
gooseneck trailer tongue weight calculator
A gooseneck carries far more at the hitch than a bumper-pull: 15–25% of the loaded trailer weight as pin weight, commonly planned around 20%. That pin weight sits in the truck bed and eats into payload.
Written by Hemant RawatLast reviewed July 2026How we verify
Your trailer
The fully loaded weight of the trailer — everything on board.
Advanced: check against a hitch rating
The max tongue weight stamped on your hitch or ball mount — the lowest of these governs.
Result
Enter your loaded trailer weight to see the recommended tongue weight range.
gooseneck trailer: the 15–25% rule
A gooseneck trailer should carry 15–25% of the gross trailer weight, carried on the kingpin as pin weight, with about 20% as a practical target. Enter your loaded weight above and the calculator returns the exact range in pounds (or kilograms).
Loading a gooseneck trailer to hit the target
Where you place the load is what actually sets pin weight — the percentage is just the goal. To keep it in range:
- Plan for pin weight to land on the truck: a 15,000 lb trailer at 20% puts ~3,000 lb in the bed, on top of passengers and cargo.
- Distribute the trailer load so the pin stays in the 15–25% band; too little invites sway, too much overloads the rear axle.
- Always confirm actual pin weight on a scale — GTW × 20% is only a planning estimate.
Typical setup
3/4- and 1-ton pickups with an in-bed gooseneck ball; flatbed, equipment, and livestock trailers.
Verify by weighing
The number above is an estimate from the standard percentage. Your real pin weight depends on exactly how this gooseneck trailer is packed, so once you're loaded, measure it. Also check whether your rig calls for a weight distribution hitch, and make sure your hitch class and ball mount are right for the load.
Sources
- RV Miles — Fifth wheel pin weight and towing
- etrailer — What percent of a 5th-wheel king pin should the tongue weight be
- Tulga Fifth Wheel Co. — How do I find out the trailer kingpin weight
Values are summarized from public references and were last verified July 2026. See ourmethodologyfor how we source and verify; manufacturer rating labels and your owner's manual always take precedence.