Cargo Load Calculator

TOWING & TRUCK
Remaining Cargo
Weight Used
Payload Capacity
Capacity Used
Will my planned cargo fit?

Remaining cargo by payload rating
Payload Capacity Remaining Cargo
Cargo capacity is what is left of your payload rating after the things that always ride along: passengers, fuel, gear, roof racks, and any trailer tongue weight pressing down on the hitch. Payload is the maximum a vehicle can carry beyond its own curb weight, set by the GVWR, and tongue weight counts against it just like cargo in the bed. Run out of payload and you are overloaded even if the bed looks empty.

Cargo Capacity Versus Payload

Payload is the total weight a vehicle can carry above its curb weight, fixed by the GVWR on the door sticker. Cargo capacity is what remains of that payload once the unavoidable loads are subtracted: the people aboard, the gear that lives in the vehicle, and the tongue weight of any trailer. Knowing the difference keeps you from quietly running overweight.

Tongue Weight Counts Too

A common mistake is forgetting that a trailer presses down on the hitch. That tongue weight, usually 10 to 15 percent of the trailer’s loaded weight, sits squarely on the rear axle and eats into payload exactly like cargo in the bed. Towing a heavy trailer can use up most of a truck’s payload before a single box is loaded.

Why Overloading Matters

Exceeding payload overworks the tires, brakes, and suspension, lengthens stopping distance, and can void warranties or insurance after an incident. Spreading the load and checking remaining cargo before a trip is far cheaper than a blown tire or a failed brake on a grade.

Frequently Asked Questions

Where do I find my payload capacity?

On the yellow tire-and-loading sticker in the driver’s door jamb, or by subtracting curb weight from GVWR.

Do passengers really count against payload?

Yes. Everyone and everything added after the vehicle left the factory counts, including fuel beyond the base fill, accessories, and pets.

Is cargo capacity the same as towing capacity?

No. Towing capacity is how much you can pull; cargo capacity is how much you can carry. Tongue weight links them, since it draws from payload.

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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.