Weigh Your Fish with a Ruler
Fish can sometimes be harmed when weighed. To
protect your fish take a length measurement. With
this chart you can quickly determine the approximate
weight of your fish using a ruler or tape measure.
If you measure your fish in centimetres use the table
on the right. For example a walleye 66 cm in length
would weigh approximately 3 kg. If you measure
your fish in inches use the conversion chart below.
For example a walleye 33 inches in length would be
(33 x 2.54 = 83.8 cm) which is roughly 6.44 kg or
(6.44 x 2.21) = 14.2 lbs.
Centimetres to Inches
Inches to Centimetres
Kilograms to Pounds
Pounds to Kilograms
= multiply by 0.39
= multiply by 2.54
= multiply by 2.21
= multiply by 0.45
Total
Length
cm
20
28
36
44
52
60
68
76
84
92
100
120
140
160
180
Approximate Weights, kg
Perch
Grayling
Walleye
Lake Trout
Pike
0.11
0.31
0.67
1.25
0.08
0.22
0.46
0.85
1.41
2.18
0.06
0.18
0.41
0.79
1.36
2.16
3.24
4.65
6.44
0.06
0.17
0.37
0.72
1.24
1.98
2.98
4.29
5.94
8.00
10.50
19.03
0.07
0.18
0.36
0.64
1.04
1.56
2.23
3.06
4.07
5.28
6.70
11.28
17.51
How to Measure a Fish
Total Length (with tail pinched)