Yellowfin Tuna Weight Calculator – Estimate Fish Weight by Length

🐟 Yellowfin Tuna Weight Calculator

Estimate your yellowfin tuna's weight from length & girth measurements — imperial & metric results instantly

Quick Presets
📏 Fish Measurements
🐟 Yellowfin Tuna Weight Estimate
📊 Weight Formula Specifications
L×G²
Standard Formula
/800
Standard Divisor
/750
IGFA Divisor
L³/1200
Scombridae Formula
଑%
Typical Accuracy Range
0.60
Girth-to-Length Ratio
94 in
Max Recorded Length
427 lb
World Record Weight
📋 Yellowfin Tuna Size Reference Chart
Fork Length (in) Fork Length (cm) Typical Girth (in) Est. Weight (lb) Est. Weight (kg) Class
2050.812~6~2.7Juvenile
2563.515~11~5.0Juvenile
3076.218~18~8.2Schoolie
3588.921~29~13.2Schoolie
40101.624~43~19.5Football
45114.327~62~28.1Football
50127.030~84~38.1Medium
55139.733~111~50.3Large
60152.436~145~65.8Large
65165.139~185~83.9Trophy
70177.842~231~104.8Trophy
75190.545~285~129.3Giant
80203.248~346~157.0Giant
🎣 Recommended Tackle by Fish Size
Fish Weight Rod Power Reel Size Line (lb test) Leader (lb) Hook Size
Under 30 lbMedium-Heavy4000-500030-50 lb braid40-60 lb4/0 – 6/0
30 – 60 lbHeavy6000-800050-80 lb braid60-80 lb6/0 – 8/0
60 – 100 lbExtra Heavy14000-1800080-100 lb braid80-100 lb8/0 – 10/0
100 – 200 lbStandup Offshore50W class100-130 lb mono200 lb10/0 – 12/0
Over 200 lbBent Butt Offshore80W class130 lb mono300 lb12/0 – 16/0
🌊 Tuna Species Weight Comparison
Species Avg Weight (lb) Max Weight (lb) Avg Length (in) Girth Ratio Formula Divisor
Yellowfin Tuna40–12042740–700.60800
Bluefin Tuna200–600149660–1000.65650
Bigeye Tuna30–10043540–650.62780
Albacore Tuna15–458830–450.55900
Skipjack Tuna5–207620–350.52950
Blackfin Tuna5–154520–320.501000
💡 Measurement Tips
📏 Measuring Fork Length Correctly: Fork length is measured from the tip of the upper jaw to the center of the tail fork (where the two tail lobes meet). This is the most commonly used and accepted measurement for weight estimation formulas. Use a flexible measuring tape or a bump board for accuracy.
📐 Getting an Accurate Girth Measurement: Wrap a soft measuring tape around the widest part of the fish's body — typically just behind the pectoral fins. A wet tape measure conforms better to the fish's body. Girth measurement has the greatest impact on the weight estimate since it is squared in the formula. A 1-inch girth error can change the result by 5–10%.

yellowfin tuna truly impresses with its size. On average it weighs around 20 pounds, although some can reach much more than that. Medium ones reach around 60 pounds but the biggest samples pass even 400 pounds.

The fish that one catches for stores usually have between 40 and 60 kilos, so around 90 to 130 pounds.

How Big Yellowfin Tuna Gets and What It Tastes Like

Record weight of yellowfin tuna is 880 pounds. It is really heavy. About length, the biggest reaches 280 centimetres, what matches around 110 inches.

They can grow to 2,4 metres, so almost 7,9 feet. Truly wonderful for fish.

yellowfin tuna ranks between the big tuna, even so it stays a bit smaller than bluefin tuna. Atlantic and Pacific bluefin species pass 450 kilos, so around 990 pounds. The heaviest bluefin ever noted weighed around 1500 pounds.

One can not lease bluefin, so they must be hunted in natural state, what makes them much more difficult to get. Yellowfin tuna is even a bit smaller than bigeye tuna and southern bluefin tuna.

One commonly uses a formula to estimate the weight of yellowfin tuna by body measure. It is made up of length times the sqaure of the circuit, later divided by 800. When the fish is especially plump, that circuit gives weight that seems too high.

Little yellowfin tuna that weighs around 40 pounds sometimes get the name of footballs. They tend to meet in schools, and fishers can catch them almost right after casting in the group. Little yellowfin tuna commonly school with species like skipjack, while bigger ones swim with larger fish.

Those between 50 and 80 pounds are common catches, and over 100 pounds happens regularly. One fisher managed to catch a 90-kilo yellowfin tuna beside Cape Town in South Africa, and it cost around too and a half hours to bring.

Average yellowfin tuna measures between 70 and 150 centimetres long and weighs from 7,2 to 150 kilos. The typical length sits around 150 centimetres. They have long curved dorsal and anal fins, what helps to spot big adults.

Maximum confirmed age is 9 years.

yellowfin tuna has mild taste compared to other tuna, with meaty texture. It works well for salads or cooking. The flavours are rich and juicy, with clear character that does not taste too fishy.

The texture stays firm and moist, so it works well for grilling or plainmeals. And bigeye and yellowfin tuna also goes by ahi.

Yellowfin Tuna Weight Calculator – Estimate Fish Weight by Length

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