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DTro

How much does my Flathead weigh?

11 posts in this topic

I’ve been playing with some numbers from the past couple of years thanks to all the data that I’m able to collect from the KOTC.

Here is a very simple average of weights/length for those that might not care about an exact weight.

These will vary about 3 pounds and will be less accurate the larger the fish. Just a nice little reference for those that might be interested.

35” = 20#

36” = 22#

37” = 24#

38” = 26#

39” = 28#

40” = 30#

41” = 33#

42” = 36#

43” = 38#

44” = 41#

45” = 44#

46” = 46#

47” = 49#

48” = 52#

49” = 56#

50” = 60#

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I’ve been playing with some numbers from the past couple of years thanks to all the data that I’m able to collect from the KOTC.

Here is a very simple average of weights/length for those that might not care about an exact weight.

These will vary about 3 pounds and will be less accurate the larger the fish. Just a nice little reference for those that might be interested.

35” = 20#

36” = 22#

37” = 24#

38” = 26#

39” = 28#

40” = 30#

41” = 33#

42” = 36#

43” = 38#

44” = 41#

45” = 44#

46” = 46#

47” = 49#

48” = 52#

49” = 56#

50” = 60#

Interesting.

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Dtro whats the formula for points on the ktoc that you use I'm guessing here but is it L X W / 30= points ?

and from what I noticed from your chart that this is very close and its neat that the only length 46" is the same number as in weight 46#

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The forumla for KOTC is L+G=PTS

Is that what you are asking?

A lot of guys have been providing weights with their measurements which is nice to use for a reference and I was able to extrapolate those numbers to use for this table.

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Nice! Thats great for the guy that just wants to do a quick length measurement and release the Fish quickly.

Length X Length X Girth divided by 1275 is another good one and a really accurate way of determining Flathead weight!

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The forumla for KOTC is L+G=PTS

Is that what you are asking?

A lot of guys have been providing weights with their measurements which is nice to use for a reference and I was able to extrapolate those numbers to use for this table.

yep Dtro thats what I was looking for . just nice to know. thanks

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Dtro, do you have a guide, or formula like that for channels? I think I read somewhere on here that up to 28" they run similar to walleyes but what about beyond that?

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I came across this recently from Missouri Dept of Conservation.

The first number is inches, the second number is pounds for Blues, the Third is Flatheads.

The average weight is based on nearly 6500 Flatheads and 2200 Blues.

The Blue average can be used as a close estimate for Channels I would guess.

My data above looks to be pretty accurate.

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 82.01

56.0 84.34

56.5 86.72

57.0 89.15

57.5 91.61

58.0 94.13

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For me this year it seems like all the conversions have been about 3-4 pounds higher than what my Berkely scale reads.

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WOW Ihope that I get a 55 incher acording to the chart thats a monster

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