Enter the total number of fish and the total volume of water (gallons) into the Fish Density Calculator. The calculator will evaluate and display the Fish Density.

## Fish Density Formula

The following formula is used to calculate the Fish Density.

FD = F / VW
• Where FD is the Fish Density (fish/gallon)
• F is the total number of fish
• VW is the total volume of water (gallons)

To calculate the fish density, divide the total number of fish by the total volume of water.

## How to Calculate Fish Density?

The following example problems outline how to calculate Fish Density.

Example Problem #1:

1. First, determine the total number of fish.
1. The total number of fish is given as: 500.
2. Next, determine the total volume of water (gallons).
1. The total volume of water (gallons) is provided as: 1000.
3. Finally, calculate the Fish Density using the equation above:

FD = #F / VW

The values given above are inserted into the equation below:

FD = 500 / 1000 = .5 (fish/gallon)

Example Problem #2:

For this problem, the variables needed are provided below:

total number of fish = 205

total volume of water (gallons) = 59

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer.

FD = #F / VW = ?