Enter the length and girth of the trout into the calculator to determine the weight.

Trout Weight Formula

The following formula is used to calculate the weight of a trout.

W = (L^3 * G) / 800

Variables:

  • W is the weight of the trout (lbs)
  • L is the length of the trout (inches)
  • G is the girth of the trout (inches)

To calculate the weight of a trout, cube the length of the trout, then multiply the result by the girth of the trout. Divide the result by 800 to get the weight of the trout in pounds.

What is a Trout Weight?

A trout weight refers to the mass or heaviness of a trout, a type of freshwater fish. It is often used by anglers and fisheries to determine the health, age, and maturity of the fish. The weight of a trout can vary greatly depending on its species, diet, habitat, and other factors. It is typically measured in pounds or kilograms.

How to Calculate Trout Weight?

The following steps outline how to calculate the Trout Weight using the given formula:


  1. First, determine the length of the trout (L) in inches.
  2. Next, determine the girth of the trout (G) in inches.
  3. Next, calculate L^3 (L cubed).
  4. Then, multiply L^3 by G.
  5. Finally, divide the result by 800 to calculate the weight of the trout (W).

Example Problem:

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

Length of the trout (L) = 20 inches

Girth of the trout (G) = 12 inches