Fish Weight Calculator

Have you ever wondered how much your trophy bass weighed? Here's a way to get a close estimate.

Have you ever wondered how much your "catch-n-release" trophy weighed? Well, here's a way to get a close estimate.*


  1. Enter the measurements of your fish (The calculator will approximate the girth measurement if you don't have one.)
  2. Select the species closest to the fish you caught.
  3. Click the Calculate button to see the estimated weight of the fish.*

Click Reset first if you wish to calculate additional weights.

* PLEASE NOTE: This is an estimate only. Fish come in different shapes and sizes, and can vary greatly, just as humans of the same age/sex/height. By nature, this is a rough estimate only, and will give an average, approximate weight. It is not meant to be 100% accurate.


Fish Weight Calculator
Enter Length:
Enter Girth:
Bass, Carp, Catfish
Bluegill, Crappie
Northern Pike

Estimated* Weight: (lbs)