Enter the Gross Vehicle Weight Rating and Trailer Weight into the calculator to determine the Trailer Load Capacity. This calculator can also evaluate any of the variables given the others are known.

Trailer Load Capacity Formula

The following formula is used to calculate the trailer load capacity.



  • TLC is the Trailer Load Capacity (lbs) GVWR is the Gross Vehicle Weight Rating (lbs) TW is the Trailer Weight (lbs)

To calculate the trailer load capacity, subtract the trailer weight from the gross vehicle weight rating. The result is the maximum weight that the trailer can carry, including the weight of the trailer itself.

What is a Trailer Load Capacity?

Trailer load capacity refers to the maximum weight that a trailer is designed to safely carry. This includes the weight of the cargo, as well as any additional equipment or accessories loaded onto the trailer. It is crucial to adhere to the specified load capacity to ensure safety and prevent damage to the trailer. Overloading can lead to tire blowouts, brake failures, or structural damage to the trailer. The load capacity is usually specified by the manufacturer and can be found in the trailer’s manual or on a sticker or plate on the trailer itself.

How to Calculate Trailer Load Capacity?

The following steps outline how to calculate the Trailer Load Capacity (TLC) using the formula: TLC = GVWR – TW.

  1. First, determine the Gross Vehicle Weight Rating (GVWR) in pounds (lbs).
  2. Next, determine the Trailer Weight (TW) in pounds (lbs).
  3. Next, use the formula TLC = GVWR – TW to calculate the Trailer Load Capacity.
  4. Finally, calculate the Trailer Load Capacity (TLC) in pounds (lbs).
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Gross Vehicle Weight Rating (GVWR) = 5000 lbs

Trailer Weight (TW) = 2000 lbs