Walleye Length to Weight Conversion Chart

No walleye weight formula is going to beat the accuracy of a scale, but there are several methods that can provide you a close estimate. Estimating the weight of your walleye catch without using a scale puts less stress on the fish and will typically get you to within a pound—plus or minus—of the actual weight.

walleye length to weight chart

Walleye weight estimates in the above chart are based on (Length x Girth^2) / 800

The most accurate formula for estimating the weight of a walleye incorporates length and girth. When girth isn’t easily obtainable, there is an estimation method based on length alone that’s easy to compute and pretty accurate as well.

Walleye length to weight conversion formulas:

  • (length x length x length)/2700 – use when girth isn’t avaiable
  • (length x girth x girth)/800 – use for average size walleye
  • (length x girth x girth)/750 – use for more plumb walleye

The first formula listed above—(length x length x length) / 2700—is based purely on the length of the fish. It isn’t going to be be the most accurate, but it’s the easiest obtain. Measure the total length (TL) of your walleye, times the length figure by 3, then divide by 2700—your divisor or “shape” factor.

You can adjust the divisor number up or down depending on the shape of the fish to get a more accurate estimate. 2700 is for an average-shaped walleye. If you walleye is on the thin side, increase your shape factor to 2800. If your walleye is on the plumb side, decrease the shape factor to 2600. Again, using only length isn’t ideal, but it will get you close.

Your most accurate weight estimate will come from using the formula that incorporates girth—(length x girth x girth)/800. Take your total length measure, multiple it by the girth squared, and then devide by 800. Using 800 as your shape factor will give a good weight estimate of an averaged-shaped walleye. If you fish is just really bulky from nose to tail, you can decrease you shape factor to 750 to produce a slightly more accurate estimate (but 800 is usually perfect.)

The walleye length to weight conversion chart below provides easy reference for average and maximum weight estimates based on the length of a walleye in inches. For an average size walleye using the “Avg Weight (lbs)” column. For heaftier specimens, using the “Max Weight (lbs)” column. Just keep this chart handy on your phone you won’t need to perform any computations, just measure your fish and look up the weight.

Length (inches)Avg Weight (lbs)Max Weight (lbs)
141lbs1lbs 3oz
151lbs 4oz1lbs 8oz
161lbs 8oz1lbs 12oz
171lbs 13oz2lbs 2oz
182lbs 3oz2lbs 9oz
192lbs 9oz2lbs 15oz
202lbs 15oz3lbs 8oz
213lbs 7oz4lbs
223lbs 15oz4lbs 10oz
234lbs 8oz5lbs 5oz
245lbs 2oz6lbs
255lbs 13oz6lbs 13oz
266lbs 8oz7lbs 10oz
277lbs 5oz8lbs 9oz
288lbs 2oz9lbs 9oz
299lbs10lbs 10oz
3010lbs11lbs 12oz
3111lbs12lbs 15oz
3212lbs 2oz14lbs 4oz
3313lbs 5oz15lbs 10oz
3414lbs 9oz17lbs 1oz
3515lbs 14oz18lbs 10oz
3617lbs 4oz20lbs 5oz
Measuring Length and Girth

Having accurate length and girth measurements is important for estimating weight of a walleye. For estimating weight, always use the total length (TL) measurement as shown in the diagram below. Total length is from the tip of the snout to the tip of the tail.

walleye length and girth measurement diagrams

To determine girth, measure the circumference at the thickest point of your walleye’s midsection, which is often in front of, or in between, the dorsal fins.