Bonefish Weight Calculator

Fishing enthusiasts often want to estimate the weight of the fish they catch. One popular method is to use a formula that takes into account the length and girth of the fish. To make this process easier, we’ve created the Bonefish Weight Calculator. This simple online tool allows you to input the fish’s length and girth, and it will provide you with an estimated weight.


The Bonefish Weight Calculator uses the following formula to estimate the weight of a fish:

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

This formula takes the fish’s length (in inches) and girth (in inches) as input and calculates an estimated weight in pounds.

How to Use

Using the Bonefish Weight Calculator is straightforward. Follow these steps:

  1. Enter the fish’s length in inches in the “Fish Length” field.
  2. Enter the fish’s girth in inches in the “Fish Girth” field.
  3. Click the “Calculate” button.

The calculator will instantly provide you with an estimated weight for the fish based on the formula mentioned above.


Let’s say you’ve caught a bonefish with a length of 24 inches and a girth of 12 inches. You would input these values into the calculator, click “Calculate,” and it would provide you with an estimated weight.


  1. Q: How accurate is the Bonefish Weight Calculator? A: The calculator provides a rough estimate of the fish’s weight based on the formula. It may not be entirely accurate but can give you a good idea.
  2. Q: Can I use this calculator for other types of fish? A: While it’s specifically named the “Bonefish Weight Calculator,” you can use it for other fish species as well.
  3. Q: Is the formula used here widely accepted? A: The formula is a common method used by anglers, but there are variations. It should provide a reasonable estimate.
  4. Q: What if I measure the fish in centimeters? A: You can use the calculator with centimeters, but make sure to convert the result to kilograms as it’ll be in pounds.
  5. Q: Why do we square the girth in the formula? A: Squaring the girth helps account for the fish’s three-dimensional shape in the weight calculation.


The Bonefish Weight Calculator is a handy tool for anglers who want a quick estimate of their catch’s weight. While it may not provide precise measurements, it’s a useful reference point for any fishing expedition. Remember that fish weight can vary, so this calculator offers a close approximation for your convenience. Happy fishing!

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