🐟 Sturgeon Weight Calculator
Estimate sturgeon weight from length & girth — all species, imperial & metric
| Length (in) | Length (cm) | Typical Girth (in) | Est. Weight (lb) | Est. Weight (kg) | Size Class |
|---|---|---|---|---|---|
| 24 | 61 | 10 | 3 | 1.4 | Juvenile |
| 30 | 76 | 13 | 6 | 2.7 | Juvenile |
| 36 | 91 | 16 | 12 | 5.4 | Sub-adult |
| 42 | 107 | 19 | 19 | 8.6 | Sub-adult |
| 48 | 122 | 22 | 29 | 13.2 | Adult |
| 54 | 137 | 25 | 42 | 19.1 | Adult |
| 60 | 152 | 28 | 59 | 26.8 | Adult |
| 66 | 168 | 30 | 74 | 33.6 | Trophy |
| 72 | 183 | 33 | 97 | 44.0 | Trophy |
| 84 | 213 | 38 | 152 | 69.0 | Trophy+ |
| Species | Avg Length (in) | Avg Weight (lb) | Max Weight (lb) | Formula Divisor | Habitat |
|---|---|---|---|---|---|
| White Sturgeon | 36–96 | 20–200 | 1,500 | 800 | Pacific Coast Rivers |
| Lake Sturgeon | 36–72 | 10–100 | 300 | 790 | Great Lakes / Rivers |
| Green Sturgeon | 36–84 | 20–150 | 350 | 810 | Pacific Coast |
| Pallid Sturgeon | 24–60 | 3–40 | 85 | 820 | Missouri/Miss. River |
| Shovelnose Sturgeon | 18–36 | 1–6 | 10 | 830 | Mississippi Basin |
| Shortnose Sturgeon | 18–36 | 1–9 | 15 | 820 | Atlantic Coast |
| Atlantic Sturgeon | 48–96 | 50–300 | 800 | 800 | Atlantic Coast |
| Size Class | Est. Weight | Rod Power | Line (lb test) | Leader | Hook Size |
|---|---|---|---|---|---|
| Juvenile (<36 in) | <12 lb | Medium-Heavy | 20–30 lb | 40 lb mono | 3/0–5/0 |
| Sub-adult (36–48 in) | 12–30 lb | Heavy | 40–60 lb | 60 lb mono | 5/0–7/0 |
| Adult (48–66 in) | 30–75 lb | X-Heavy | 60–80 lb | 80 lb mono | 7/0–9/0 |
| Trophy (66–84 in) | 75–150 lb | XX-Heavy | 80–100 lb | 100 lb mono | 9/0–12/0 |
| Giant (>84 in) | 150+ lb | Offshore/Extra | 100–200 lb | 200 lb mono | 12/0–16/0 |
| Method | Formula | Accuracy | Best Use |
|---|---|---|---|
| Length + Girth (Standard) | L x G² / 800 | ±5–10% | Field estimate, C&R |
| Length + Girth (Fine-tuned) | L x G² / 795 | ±4–8% | Research tagging |
| Length Only (Cube) | K x L³ | ±15–25% | Quick field estimate |
| Fork Length + Girth | FL x G² / 820 | ±6–12% | Scientific surveys |
| Electronic Scale | Direct measurement | ±0.1% | Harvest / records |
Sturgeon rank between the biggest freshwater fishes of the world. The size and Weight of those fishes depends on the species. Some of them grow only to some pounds, but species like the beluga reach almost 3 500 pounds or even more.
For adult Sturgeon the typical lengths are between 7 and 12 feet, with Weight roughly of 400 to 800 pounds.
How Big Are Sturgeons?
The beluga Sturgeon is the one that everyone commonly talks about because of its size. The most impressive sample ever noted was a female beluga fished in the delta of the Volga in 1827. It was 7,2 metres and weighed 1 571 kilos so around 3 463 pounds.
Beluga males can reach up to 6,3 metres and weigh from 1 000 to 1 300 kilos. Nowadays however caught adult belugas usually are much more small, normally between 4 feet 8 inches and 10 feet 9 inches, with Weight from 42 to 582 pounds. Female belugas are around 20 percent bigger than males.
The oldest record beluga, caught in 1993, weighed only 224 puonds despite its age. That shows a huge difference compared to those ancient giants.
The kaluga Sturgeon is another impressive species. It can grow to 18,5 feet and weigh more then 2 200 pounds.
Also the lake Sturgeon deserves attention. The biggest and oldest of them reach around 7 feet, weigh 200 to 300 pounds and can live to 150 years. Most adults are 4 to 6 feet and weigh 30 to 80 pounds, while they live 50 to 100 years.
In Minnesota local lake Sturgeon commonly pass 100 pounds, and big samples here become more common. The Rainy River holds almost 100 000 Sturgeon, that are 40 inches or more. In New York adults measuring 3 to 5 feet weigh 10 to 80 pounds, although sometimes they pass 7 feet and 300 pounds.
In the Big Lakes they usually weigh to 200 pounds.
The atlantic Sturgeon can reach around 14 or 15 feet long and weigh more than 800 pounds. It even jumps nine feet high in the air, which is truly thrilling for such a heavy fish.
For white Sturgeon there are heavy charts, that show how fast the Weight grows with the length. A nine foot fish can weigh 550 to 600 pounds and be around 80 years. A ten foot sample passes 800 pounds, while eleven foot reach more than 1 000 pounds.
One fish had 58 inches around and based on the chart weighed above 1 000 pounds. Lake and river Sturgeon can reach 1 000 pounds or more, depending on how long a life they had. Belugas are known as endless growers, which means that their bodies never stop growing.
Their only limits are theavailable food and the space.
