Walleye Weight Formula?

  • Joe Scegura
    Alexandria MN
    Posts: 2758
    May 13, 2010 at 5:50 am #1267583

    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?

    mike_utley
    Zumbrota, MN
    Posts: 578
    May 13, 2010 at 11:15 am #871661

    length X length x length divided by 2700

    Don Miller
    Onamia, MN
    Posts: 378
    May 13, 2010 at 12:55 pm #871682

    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.

    jon_jordan
    St. Paul, Mn
    Posts: 10908
    May 13, 2010 at 1:19 pm #871698

    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

    -J.

    big_g
    Isle, MN
    Posts: 23151
    May 13, 2010 at 2:20 pm #871712

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

    big G

    Jason Sullivan
    Chippewa Falls, WI
    Posts: 1383
    May 13, 2010 at 4:28 pm #871751

    Joe-

    Here is the chart the MN Walleye Searchers use.

    Chart

    Sully

    Joe Scegura
    Alexandria MN
    Posts: 2758
    May 13, 2010 at 10:03 pm #871856

    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.
    guys.

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