To determine the weight of a largemouth bass in the absence of a scale, the following formula based upon linear measurements of the fish is a reliably accurate method of calculating its weight:
        L x G x G
W =        -----------                    or (L x G x G)/800
           800

L = Length [in inches] from nose to fork in tail

G = Girth [in inches] around fleshiest portion of body

W = Weight of fish in pounds