Fifth Wheel Hitch Weight Calculator

A fifth wheel is a large RV trailer that mounts directly over a pickup truck's rear axle — and knowing whether your truck can safely handle the load is critical before you tow. Enter your truck curb weight, GVWR, GCVWR, max payload, and tow capacity alongside your fifth wheel UVW, GVWR, hitch pin weight, passengers weight, and cargo weight into the Fifth Wheel Hitch Weight Calculator. You'll get your available payload, total payload used, new truck GVW, new GCVW, and remaining tow capacity — so you can see exactly where you stand against your truck's limits.

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Empty weight of your truck without passengers or cargo

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Gross Vehicle Weight Rating - maximum loaded truck weight

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Gross Combined Vehicle Weight Rating - maximum truck + trailer weight

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Maximum cargo weight truck can carry

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Maximum trailer weight truck can tow

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Unloaded Vehicle Weight - empty fifth wheel weight

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Gross Vehicle Weight Rating - maximum loaded fifth wheel weight

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Weight pressing down on the hitch pin (typically 20-25% of trailer weight)

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Total weight of all passengers

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Weight of cargo, gear, and supplies in truck bed

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Available Payload

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Total Payload Used

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New Truck GVW

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New GCVW

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Remaining Tow Capacity

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Frequently Asked Questions

What is pin weight and why is it important?

Pin weight is the downward force exerted by the fifth wheel trailer on the truck's hitch. It's typically 20-25% of the trailer's total weight and is crucial for proper weight distribution and safe towing.

How do I find my truck's GVWR and payload capacity?

Check your truck's door jamb sticker, owner's manual, or manufacturer specifications. GVWR is the maximum loaded weight, and payload capacity is GVWR minus curb weight.

What happens if I exceed my truck's payload capacity?

Exceeding payload capacity can cause handling problems, brake failure, tire blowouts, suspension damage, and may void your warranty. It's also illegal in most jurisdictions.

Can I increase my truck's towing capacity?

No, towing capacity is set by the manufacturer based on engine, transmission, brakes, and frame strength. Adding aftermarket parts cannot safely increase these ratings.

What's the difference between UVW and GVWR for fifth wheels?

UVW (Unloaded Vehicle Weight) is the empty trailer weight. GVWR is the maximum loaded weight including cargo, water, propane, and supplies.

How much pin weight is too much?

Pin weight should be 20-25% of trailer weight. Too little causes trailer sway, while too much can overload the truck's rear axle and cause handling problems.

Should I weigh my actual setup?

Yes, always weigh your loaded truck and trailer at a certified scale. Actual weights often differ from manufacturer specifications due to options and cargo.

What if my calculations show I'm overweight?

Reduce cargo weight, consider a lighter trailer, or upgrade to a truck with higher payload and towing capacity. Never exceed manufacturer weight ratings.