Trout Weight Calculator


In the realm of fishing, accurately estimating the weight of a catch is crucial. Whether for personal records or tournament standards, having a reliable tool at hand simplifies this task. Enter the Trout Weight Calculator, a handy online tool designed to provide quick and precise weight estimates for your trout catches.

How to Use

Using the Trout Weight Calculator is straightforward. Simply input the length and girth measurements of your trout catch into the designated fields, then click the “Calculate” button. The calculator will swiftly process the data and display the estimated weight of the trout.


The Trout Weight Calculator employs the following formula to calculate the weight of a trout:

Weight (in pounds)=(Length ×Girth × Girth)/800

Example Solve

Let’s say we have a trout with a length of 20 inches and a girth of 12 inches. Plugging these values into the formula:



Weight=3.6 pounds

So, the estimated weight of the trout is 3.6 pounds.


Q: Is this calculator accurate for all trout species?
A: While the formula used in this calculator provides a good estimate for many trout species, factors such as fish shape and condition may affect the accuracy slightly.

Q: Can I use this calculator for other fish species?
A: This calculator is specifically tailored for trout. For other fish species, different formulas may be more appropriate.

Q: Are there any limitations to using this calculator?
A: This calculator provides estimates based on length and girth measurements. For the most accurate results, ensure your measurements are as precise as possible.


The Trout Weight Calculator offers anglers a convenient and reliable means of estimating the weight of their trout catches. By inputting length and girth measurements, users can quickly obtain weight estimates, aiding in tracking personal records and ensuring adherence to tournament regulations.

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