Walleye Weight Formula?

  • Avatar of joe-scegura joe-scegura 
    Posts: 893

    I was wondering if anyone knows the formula for calculating a walleye weight? Length and Girth? I found quite a few calculators online but most of them are WAY off. Walleye Central has one that’s pretty accurate, but I’d like to know the formula. Any one have any suggestions?

    Avatar of mike_utley mike_utley 
    Posts: 524

    length X length x length divided by 2700

    avatar Don Miller 
    Posts: 350

    Multiply length times girth squared. Then divide by 800 to get weight in lbs. Has worked well compared when compared to my Rapala digital scale.

    avatar jon_jordan 
    Posts: 10,936

    I’ve caught 25 inch fish that pushed 7.5 lbs. I’ve caught 29 inch fish that were a shade over 6 lbs. Here is my basic guide that is as close as any formula:

    25 inch = 5 lbs
    26 inch = 6 lbs
    27 inch = 7 lbs
    28 inch = 8 lbs
    29 inch = 9 lbs
    30 inch = 10 lbs


    Avatar of big_g big_g 
    Posts: 15,921

    Jons is fairly accurate… for spring I would subtract about 1/2 lb. for spawned out

    big G

    Avatar of jason_sullivan jason_sullivan 
    Posts: 1,378


    Here is the chart the MN Walleye Searchers use.



    Avatar of joe-scegura joe-scegura 
    Posts: 893

    Thanks guys, Jon your scale is what I normally go by but if you get one that’s either skinny or super girthy it’d be nice to know roughly what it weighed. I caught a 31″ x 18″ on the Rainy River that went 13.0 lbs even. Based off of my calculations the formula Don Miller posted (Girth X Girth X Length divided by 800) came very close. I don’t weigh a lot of fish so I don’t have any other examples to test out this formula.

    If any one catches a big walleye give this formula a try I’d love to hear how close it is. Thanks for the help guys.

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