Posted by: Fishyfeller
salmon --inches to lbs conversion - 07/08/13 11:42 PM
Does anyone have a estimated weight conversion or formula from inches to pounds for salmon that doesn't include measuring girth?
Doesn't have to be perfect just close.
Posted by: eyeFISH
Re: salmon --inches to lbs conversion - 07/08/13 11:54 PM
L x L x L x 0.36 / 740.
This assumes typical 3 x 5 proportions, where L = fork length.
Posted by: Anonymous
Re: salmon --inches to lbs conversion - 07/09/13 12:05 AM
Pretty sure there is a calculator for salmon on this site. There is one for steelhead.
Posted by: eyeFISH
Re: salmon --inches to lbs conversion - 07/09/13 12:06 AM
He asked for one without girth.
Posted by: Anonymous
Re: salmon --inches to lbs conversion - 07/09/13 12:10 AM
EF, i tried that, and a fish i remember weight from came up 5 pounds heavier... nearly exactly double the weight...
where did that equation come from if i can ask?
Posted by: eyeFISH
Re: salmon --inches to lbs conversion - 07/09/13 12:15 AM
At 3 x 5 proportions, G = 0.6 L.
My fNp salmon formula is L x G x G / 740
By straight algebraic substitution,
L x 0.6 L x 0.6 L / 740 = L x L x L (0.36) / 740
It's money.... ask me how I know.
Posted by: Anonymous
Re: salmon --inches to lbs conversion - 07/09/13 12:16 AM
second run shows 2 pounds heavier, much closer... i was cross ref'n it with the PP calculator and your equation... (different sized fish)
is that for Salmon, or Trout? because the first fish was a rainbow, second was my largest Coho...
Posted by: Fishyfeller
Re: salmon --inches to lbs conversion - 07/10/13 12:08 AM
For steelhead I use the formula first 25 inches = 5 pounds + 1 pound for every inch longer. It gets you really close.
So figure a 39 inch steelhead = 5 pounds plus 14 pounds =@ 19 pound fish
39-25=14+5=19 lbs
Was kind of hoping for a similar formula for salmon . A simple mental math one could do without use of a calculator and of course being any true fisherman if it came out heavier then actual weight then well...........
