Estimating Largemouth Bass Weight

The chart below is useful in estimating the weight of a largemouth bass, based on it’s length. It’s important to remember that this is only a rough estimate, and the figures in the table below are average weights for fish falling into each length category. The figures are based on research performed by the Texas Parks and Wildlife Department on largemouth bass in Texas.

The original TPW table is broken down into eights of an inch. The chart below only lists quarters of an inch, since that’s what we us in kayak bass fishing tournaments. You can view the full table, along with additional information from the Texas Parks & Wildlife Department by clicking here.

How to Use the Chart

The table is broken down into two sections, Inches and Fractions of an inch. The approximate weight of a fish is listed where each inch and fractional inch intersect on the chart.

For example, if you have a bass that measures 16.50 inches, scroll down the inches column to 16 and then move right until the 16 inch line intersects with the 1/2 inch column. The number at that intersection is the approx. weight. For this example, a 16.50 inch bass weighs approximately 2.49lbs.

Inches
Fractions
Fractions
Fractions
Fractions
0
1/4
1/2
3/4
10
0.48
0.52
0.56
0.61
11
0.66
0.71
0.76
0.81
12
0.87
0.93
1.00
1.07
13
1.14
1.21
1.29
1.37
14
1.45
1.54
1.63
1.72
15
1.82
1.92
2.02
2.13
16
2.25
2.36
2.49
2.61
17
2.74
2.88
3.02
3.16
18
3.31
3.46
3.62
3.78
19
3.95
4.13
4.31
4.49
20
4.68
4.87
5.08
5.28
21
5.49
5.71
5.94
6.17
22
6.40
6.64
6.89
7.15
23
7.41
7.68
7.95
8.23
24
8.52
8.82
9.12
9.43
25
9.75
10.07
10.40
10.74
26
11.09
11.44
11.80
12.17
27
12.55
12.94
13.33
13.73
28
14.15
14.56
14.99
15.43
29
15.87
16.33
16.79
17.26