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### How Much Does Your Fish Weigh?

Fish can be injured when weighed with portable scales. To estimate the weight of your fish, simply take a length and girth measurement (in inches), and use the following formulas. Remember, these are only estimates!

Example: A 30-inch striped bass weighs approximately 12 pounds (30" x 30" x 30")/2,200 = 12.3 pounds.

Species of Fish

Formula (see below)

Striped Bass

Length3

2,200

Walleye
Yellow Perch

Length3

2,700

Northern Pike
Chain Pickerel

Length3

3,500

Length x Length x Girth

1,650

Sunfish
Scup

Length3

1,200

Large/Smallmouth Bass
Black Sea Bass

Length x Length x Girth

1,200

Trout

Length x Girth2

700

Weakfish

Bluefish

Formula Explanations:

 Length3  = Length x Length x Length Length2  = Length x Length Girth2  =  Girth x Girth Girth is the greatest distance around the body A = Length B = Girth

Content last updated March 2020