Semi-Truck Maximum Payload & Towing Capacity Calculator

Understanding your semi truck's maximum payload and towing capacity is crucial for safe and efficient hauling. Our user-friendly calculator assists truck owners and operators in determining their truck's payload and towing capacity. Enter the truck's Gross Vehicle Weight Rating (GVWR), its curb weight, and the Gross Combined Weight Rating (GCWR) to get the results instantly.

Please note these calculators are provided for informational purposes only and unrelated to Drivewyze and its software products.

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Calculate Maximum Payload and Towing Capacity

Formula Used

Maximum Payload = GVWR - Curb Weight

Towing Capacity = GCWR - Curb Weight

In these formulas:

  • GVWR is the maximum weight a vehicle is rated to safely carry, including its own weight.
  • Curb Weight is the weight of the truck when it's idle and without cargo or passengers.
  • GCWR is the total weight of a loaded truck and its towed load.


GVWR (lbs) Curb Weight (lbs) GCWR (lbs) Maximum Payload (lbs) Towing Capacity (lbs)
80000 25000 130000 55000 105000
75000 24000 125000 51000 101000

Frequently Asked Questions (FAQs)

What is GVWR and why is it important?

GVWR stands for Gross Vehicle Weight Rating and it indicates the maximum weight a truck can safely carry, including the weight of the truck itself. It's an important measure for safety and avoiding potential fines or damage to the vehicle.

How can I find out the curb weight of my semi truck?

The curb weight of your truck is typically mentioned in the owner's manual or on a sticker located inside the driver’s door jamb. If you can't find it there, contact the manufacturer or dealer for specifications.

What factors can affect my truck's towing capacity?

Towing capacity can be affected by factors such as engine size, transmission type, axle ratios, and the truck's chassis and frame strength.

Can this calculator be used for other types of vehicles?

Yes, this calculator can be used for other types of vehicles as long as you know the GVWR, curb weight, and GCWR. Do note that the results are most accurate for vehicles designed for heavy-duty towing and payload capacities.