Length/Weight Chart

Catch a big catfish? Use this chart to estimate how much a blue catfish or flathead catfish weighs.

Catfish length-weight chart
Total Length (inches)
from the tip of the mouth to the end of the tail;
mouth closed and tail lobes pressed together		 Blue Catfish
Anticipated Weight
(pounds)		 Flathead catfish
Anticipated Weight
(pounds)
15.0 1.04 1.37
15.5 1.16 1.52
16.0 1.29 1.68
16.5 1.43 1.85
17.0 1.58 2.03
17.5 1.75 2.22
18.0 1.92 2.42
18.5 2.10 2.64
19.0 2.30 2.87
19.5 2.51 3.11
20.0 2.73 3.37
20.5 2.97 3.64
21.0 3.22 3.93
21.5 3.48 4.22
22.0 3.76 4.54
22.5 4.05 4.87
23.0 4.36 5.22
23.5 4.69 5.58
24.0 5.03 5.96
24.5 5.39 6.36
25.0 5.77 6.77
25.5 6.16 7.20
26.0 6.58 7.65
26.5 7.01 8.12
27.0 7.46 8.61
27.5 7.94 9.12
28.0 8.43 9.65
28.5 8.94 10.20
29.0 9.48 10.77
29.5 10.04 11.36
30.0 10.62 11.98
30.5 11.23 12.61
31.0 11.86 13.27
31.5 12.51 13.95
32.0 13.19 14.65
32.5 13.89 15.38
33.0 14.62 16.13
33.5 15.37 16.91
34.0 16.16 17.71
34.5 16.96 18.54
35.0 17.80 19.39
35.5 18.67 20.27
36.0 19.56 21.18
36.5 20.49 22.11
37.0 21.45 23.08
37.5 22.43 24.06
38.0 23.45 25.08
38.5 24.50 26.13
39.0 25.58 27.21
39.5 26.70 28.31
40.0 27.85 29.45
40.5 29.03 30.61
41.0 30.25 31.81
41.5 31.50 33.04
42.0 32.79 34.30
42.5 34.12 35.59
43.0 35.48 36.92
43.5 36.88 38.28
44.0 38.32 39.67
44.5 39.80 41.10
45.0 41.32 42.56
45.5 42.87 44.06
46.0 44.47 45.59
46.5 46.11 47.16
47.0 47.80 48.76
47.5 49.52 50.40
48.0 51.29 52.08
48.5 53.10 53.80
49.0 54.96 55.55
49.5 56.86 57.34
50.0 58.81 59.17
50.5 60.80 61.04
51.0 62.84 62.95
51.5 64.93 64.90
52.0 67.06 66.90
52.5 69.25 68.93
53.0 71.48 71.00
53.5 73.77 73.12
54.0 76.10 75.28
54.5 78.49 77.48
55.0 80.93 79.72
55.5 83.42 82.01
56.0 85.96 84.34
56.5 88.56 86.72
57.0 91.21 89.15
57.5 93.92 91.61
58.0 96.69 94.13
58.5 99.51
59.0 102.38
59.5 105.32
60.0 108.31