Salmon Weight Calculator: Estimate Weight by Length & Girth

🐟 Salmon Weight Calculator

Estimate salmon weight by length & girth — all species, imperial & metric

Quick Presets
📝 Measurement Inputs
✅ Estimated Weight Results
📊 Species Formula Factors
800 Chinook Factor
900 Coho Factor
800 Atlantic Factor
900 Pink Factor
900 Sockeye Factor
900 Chum Factor
±5% Typical Accuracy
2 Meas. Points
🐟 Salmon Species Weight Reference
Species Avg Weight (lb) Avg Weight (kg) World Record (lb) Typical Length (in) Formula Factor
Chinook (King)20–40 lb9–18 kg126 lb30–50 in800
Coho (Silver)8–12 lb3.6–5.4 kg33 lb22–30 in900
Atlantic Salmon10–20 lb4.5–9 kg79 lb28–40 in800
Pink (Humpy)3–5 lb1.4–2.3 kg15 lb18–24 in900
Sockeye (Red)5–8 lb2.3–3.6 kg16 lb20–28 in900
Chum (Dog)10–15 lb4.5–6.8 kg35 lb24–36 in900
📏 Chinook Length-to-Weight Quick Reference
Fork Length (in) Fork Length (cm) Est. Girth (in) Est. Weight (lb) Est. Weight (kg)
24 in61 cm14 in~7 lb~3.2 kg
28 in71 cm16 in~10 lb~4.5 kg
32 in81 cm18 in~15 lb~6.8 kg
36 in91 cm20 in~20 lb~9.1 kg
40 in102 cm22 in~27 lb~12.2 kg
44 in112 cm24 in~35 lb~15.9 kg
48 in122 cm26 in~45 lb~20.4 kg
52 in132 cm28 in~57 lb~25.9 kg
📐 Girth-Only Weight Estimate (Chinook)
Girth (in) Girth (cm) Est. Weight (lb) Est. Weight (kg) Typical Class
12 in30 cm~5 lb~2.3 kgJuvenile / Small
15 in38 cm~9 lb~4.1 kgAverage
18 in46 cm~15 lb~6.8 kgGood
21 in53 cm~23 lb~10.4 kgLarge
24 in61 cm~35 lb~15.9 kgTrophy
27 in69 cm~49 lb~22.2 kgTrophy+
💡 Measurement Tip: For the most accurate weight estimate, measure fork length (tip of snout to fork of tail) and girth at the widest point (usually just behind the pectoral fins). Use a flexible measuring tape and keep the fish in or near water to minimize stress and measurement error.
💡 Formula Accuracy: The standard formula Weight (lb) = Length (in) x Girth² (in) / Factor is accurate to within ±5% for most healthy salmon. Ocean-bright fish tend to be heavier for their length than spawning fish. Post-spawn fish can weigh 10–15% less than pre-spawn fish of the same length.

Get crisp skin on Salmon filet result more hard than one can imagine. When the filet touch the hot pan, it curls upward. That causes uneven cook and soft skin.

Using a fish press, one settles that, because it presses the filet down, so the skin becomes crisp while the flesh cook equally. At first sight, a fish press looks like a press for hamburgers. Between popular choices is the stainless steel fish press of Josh Niland, that delivers quickly to United States and Canada.

Make Salmon Skin Crispy and Weigh Fish

Some folks like it to a little old iron for cake, that kind with only solid metal Weight and handle. It weighs a lot for its size and cleans easily.

Now, guessing the real Weight of fish is entirely other cause. There is a practical formula, that counts for trout and other species. One multiplies the girth by itself and by the length, later divide by 800.

The girth and legnth measure in inches, and the result gives pounds. For instance, if fish has 15-inch girth and measures 29 inches, simply enter those values. The number 800 it is possible to change higher or below, if the fish is heavier or lightweight compared to average.

When no girth measure is ready, one can use default of 0.58 times the length. This method works also for sea fish as tarpon.

Here comes the tricky part however. Formulas, that only uses length, commonly err. A rough 31-inch pike could way much less, than length-based guess points.

The longest fish, that one catches, not always are the most heavy from them either.

Fish can lose Weight after capture. Bloody bleeding, throwing up and waste all add. But loss of water matters most a lot.

Because fish live in water, they always work to keep the right water balance in their bodies by means of process called osmoregulation.

Because of that, one weighs fish in the place, hanging scales work well. One popular model lasts until 110 pounds, works by means of two AAA-batteries and has a lit LCD-screen. Scales with built-in lip grip are perfect.

Simply clip the grip to the center of the bottom jaw. When the scales have only hooks, separate pair of lip grips answer. Simply takethe Weight of the grips from the whole.

Some anglers reckon, that guessing length are more reliable than weighing, because Weight changes up or below, but length never shrinks. Quickly turning the fish in water should always be the main issue.

Salmon Weight Calculator: Estimate Weight by Length & Girth

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