Striped Bass Length to Weight Chart

This chart is to approximate the weight and age of your striper. Length x length x length /1,950

Length Age Weight
Maximum
(lbs)
Average Minimum
12" 1 1 1 1
13" 1 2 1.5 1
14" 2 2.5 2.3 2
15" 2 3 2.5 2
16" 2 3.5 3 2.5
17" 3 4 3.5 2.8
18" 3 4.5 4 3
19" 3 5 4.3 3.5
20" 3 5.5 4.8 4
21" 4 6 5 4.3
22" 4 6.8 5.8 4.8
23" 4 7.5 6.3 5
24" 5 8.3 7 6
25" 5 8.8 7.8 6.3
26" 6 10 8.5 7
27" 6 11 9.8 8
28" 6 12 10.3 8.8
29" 7 12.9 11 9.7
30" 7 14 12.3 10.3
31" 8 15 13 11
32" 8 16.7 14.5 12
33" 9 17.8 15.8 13
Length Age Weight
Maximum
(lbs)
Average Minimum
34" 9 19 16.5 14
35" 10 20.5 18 15.5
36" 10 22 19.5 16.8
37" 11 23.5 20.7 17.5
38" 12 25.5 22 19
39" 12 27.2 24.5 20.7
40" 13 29.5 26 22
41" 13 31 27.3 23
42" 14 33.5 29.7 25
43" 14 36.3 32 27
44" 15 39 34 29
45" 15 41 36 30.5
46" 16 44 38.7 32.5
47" 16 47.5 42 35
48" 17 51 44 37
49" 17 54 47 39
50" 18 58 50 42
51" 18 62 55 45
52" 19 65 58 47
53" 19 68 60 49
54" 20 73 64 52
55" 20 80 70 56

A = length and B = girth | Bass - Pike - sunfish - walleye length to weight formula is on page bottom

Striped Bass growth statistics

Notes: Average size is just the median of both weights. It is more realistic maximum in the late fall after the striper has fattened itself up for the winter. Feeding will slow when water temperature drops below 50 degrees, so in the spring the minimum weights are then more accurate. This of course does not apply to a roe laden female. There has been much discussion about the varients in weights. There are many factors that contribute to weight or lack there of. A good digital flat scale will put less stress on the fish than than those lip grip types and are more accurate. A measurement should be taken while the fish is on a flat surface from the tip of the nose to the outer most point of the tail.

There is no substitute for an accurate scale but to estimate the weight of your striped bass the formula is thus.

Length X length X length /1,950.
For example: a 30 inch striped bass weighs ~ 14 pounds
30" X 30" X 30" /1,950 = 14

Use your calculator and the above formula for a fair approximation Margin of error up to 6%

The Formula for following species is thus:

Bass weight = (length x length x girth) / 1,200
pike weight = (length x length x length) / 3,500
sunfish weight = (length x length x length) / 1,200
trout weight = (length x girth x girth) / 800
walleye weight = (length x length x length) / 2,700
For example, you catch a 16 inch walleye. Using the formula for walleye above: (16 x 16 x 16) / 2,700 = 1.5 pounds. Your walleye weighs approximately 1.5 pounds.

Lyman and Woolner, 1962, The Complete Book of Striped Bass Fishing; A.S. Barnes and Company, New York

Bluefish Length to Weight chart

Length of fish Approx. Weight of fish Approx. Age of fish
13-14 inches 2+ pounds 2 years
18 inches 4+ pounds 3 years
21-22 inches 6+ pounds 4 years
24 inches 8 pounds 5 years
26-27 inches 10 pounds 6 years
28 inches 11-12 pounds 7 years
29 inches 12-13 pounds 8 years
30 inches 14 pounds 9 years
32 inches 15 pounds 10 years
33 inches 16 pounds 11 years
33-34 inches 17+ pounds 12 years
34-36 inches 17+ pounds 13 years
37+ inches 18+ pounds 14 years