Perch Weight Calculator: Estimate Your Catch by Length

🐟 Perch Weight Calculator

Estimate yellow perch weight from length & girth — imperial & metric supported

Quick Presets
📏 Measurement Inputs
ℹ️ No girth? We’ll estimate girth from your length using species-specific average ratios. Enter girth for a more accurate result.
🏆 Your Perch Weight Results
📊 Perch Quick Reference Specs
4lb 3oz
World Record Yellow Perch
12+ in
Trophy Length Threshold
0.55x
Avg Girth-to-Length Ratio
800
Standard Divisor (L x G²)
3.5 lb
Euro Perch World Record
2 lb
White Perch Record
📋 Yellow Perch Weight by Length Reference
Length (in) Length (cm) Est. Weight (lb) Est. Weight (kg) Trophy?
615.20.180.082No
717.80.280.127No
820.30.410.186No
922.90.570.259No
1025.40.780.354No
1127.91.020.463No
1230.51.320.599✅ Yes
1333.01.670.757✅ Yes
1435.62.080.943🏆 Trophy
1538.12.561.161🏆 Trophy
🐟 Perch Species Comparison
Species Avg Size Range Trophy Weight Girth Ratio Formula Divisor
Yellow Perch0.25 – 1.5 lb2+ lb0.55x Length800
White Perch0.25 – 1.0 lb1.5+ lb0.52x Length820
European Perch0.5 – 2.0 lb3+ lb0.58x Length780
🎣 Recommended Gear by Perch Size
Perch Weight Rod Power Line Weight Hook Size
Under 0.5 lbUltralight2–4 lb test#6 – #8
0.5 – 1.0 lbLight4–6 lb test#4 – #6
1.0 – 1.5 lbLight6–8 lb test#2 – #4
1.5 – 2.0 lbMedium-Light8–10 lb test#1 – #2
2.0+ lb (Trophy)Medium-Light10–12 lb test#1 – 1/0
📐 Measuring Tip: Always measure total length from the tip of the closed mouth to the furthest tip of the tail (pinched). Girth should be measured at the widest point of the fish’s body. Accurate measurements = accurate weight estimates.
🧮 Formula Note: The standard fish weight formula is Weight (lb) = Length x Girth² / 800. When girth is unavailable, it’s estimated as ~55% of length for yellow perch. A condition factor above 1.0 indicates an above-average fish for its length.

Perch ranks between those fishes that genuinely fits to surprise you about weight. Typical adult has length of around four to ten inches and weight between four and ten ounces. Yellow variant usually reaches six to twelve inches, weighing a quarter pound to one whole.

Like this most of the perches that you catch will not grow giant.

Perch Size and Weight

The biggest certified length for yellow perch matches 50 centimetres, so around 20 inches. The maximum known weight reaches about 4,2 pounds. However the average perch stays more around 19 centimetres, or 7,5 inches.

In United Kingdom they normally grow to four to ten inches long and weight between four and tewlve ounces. Here perch of one pound one would consider nice trophy.

Record fish is entirely other cause. The official world record that the International Association for Sporting Fishing acknowledged, stands at 2,9 kilos, so 6 pounds and 6 ounces. One caught it in Finland on September 4th 2010.

Already in January 2010 registered another with 3,75 kilos, or 8 pounds and 4 ounces. British record weighs 2,81 kilos, in the Netherlands it is 3,05 kilos, while in United States 2,83 kilos. In Georgia the present record shows 2 pounds and 9 ounces, from the river Savannah in 2013.

Knowing the weight of perch requires care. Various ways help, for instance combine length with girth to guess it. But perches come in all forms.

Fish of one pound can seam almost as two pound. Some is broad but thin, while others stay little, even so chunky. Up of one pound they commonly do not show his real weight.

Two big perches, both with 17,5 inches from the tail, weighed respectively 2 pounds 12 ounces and 3 pounds 2 ounces. One fish that only a bit passed 18 inches, weighed 2 pounds 12 ounces. Those extra two centimetres in length can cause big difference.

Clear, perch that recently took four-ounce roach would weigh more than hungry. Some three-pounders look like globes with tiny fins.

When one prepares perch for meal, one loses around 60 percent from the alive mass to the final packet in freezer. Male perch reaches sexual readiness at three years old, while females do that at four. They breed during spring andlay eggs in jelly-like strips above dense grass.

Perch Weight Calculator: Estimate Your Catch by Length

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