Catfish Weight Calculator

Catfish Weight Calculator

Catfish Weight Calculator

To estimate the weight of a catfish, you can use a length-based weight estimation table. The table below provides approximate weight ranges based on the length of the catfish:

Length Range (inches)Weight Range (pounds)
12-180.5-1.5
18-241.5-3
24-303-6
30-366-10
36-4210-15
42-4815-20
48-5420-25
54-6025-30

Please note that this table offers rough estimates and the actual weight of a catfish can vary depending on various factors such as species, condition, and feeding patterns.

How do you estimate the weight of a catfish?

To estimate the weight of a catfish, measure its total length and girth. Use the formula: Weight (in pounds) = (Girth^2 x Length) / 800. Measure girth around the widest part of the body, and length from snout to tail end. Note that this method provides an approximate estimation and may not be precise.


Estimating the weight of a catfish can be done using various methods, but one common approach is to use the length and girth of the fish. Keep in mind that these methods provide approximate values and may not be entirely accurate. Here’s a general method using the Bold Text technique:

  1. Measure the length: Using a measuring tape or ruler, measure the total length of the catfish from the tip of its snout to the end of its tail.
  2. Measure the girth: Measure the girth of the catfish by wrapping a measuring tape around the widest part of its body. Make sure the tape is snug but not too tight.
  3. Apply the appropriate formula: Different formulas exist for estimating the weight of a catfish based on its length and girth. The most commonly used formula is the “Lunker’s Log” formula:Weight (in pounds) = (Girth^2 x Length) / 800In this formula, the girth is measured in inches, and the length is measured in inches as well.
  4. Calculate the estimated weight: Substitute the measured length and girth into the formula and calculate the estimated weight of the catfish.For example, if the measured length is 30 inches and the girth is 20 inches:Weight = (20^2 x 30) / 800 = 15 pounds (approximately)

Please note that this formula is an estimation based on averages and may not be accurate for every catfish. The actual weight of a catfish can vary based on factors such as species, health, and body condition. It’s always best to use such estimations as rough guidelines and consult professional resources or experienced anglers for more accurate weight assessments.

How much does a 26 inch catfish weigh?

Based on the length-based weight estimation table provided earlier, a 26-inch catfish would roughly weigh between 3 to 6 pounds. However, please keep in mind that this is just an approximate estimation and the actual weight can vary depending on the specific species of catfish and its overall condition.

How much would a 9 ft catfish weigh?

Unfortunately, the length-based weight estimation table I provided earlier is not applicable for a 9 ft catfish. Catfish of that size are typically not included in the table. Weight estimates for such a large catfish would depend on the species and individual characteristics. It is advisable to consult specialized resources or experts for a more accurate estimation.

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How old is a 100 lb catfish?

The age of a catfish cannot be determined solely based on its weight. The growth rate and size of a catfish can vary depending on factors such as species, environment, and food availability. To estimate the age of a catfish, additional factors like length, girth, and growth patterns would need to be considered.

How old is a 30 lb catfish?

The age of a 30 lb catfish cannot be determined accurately without additional information. Catfish growth rates vary depending on species, environment, and food availability. Factors such as length, girth, and growth patterns would need to be considered along with the weight to estimate the age. It is recommended to consult specialized resources or experts for a more accurate estimation.

How old is a 80 lb catfish?

The age of an 80 lb catfish cannot be determined accurately without additional information. The growth rate and age of a catfish depend on several factors, including species, environment, and food availability. Without knowing these specific details, it is challenging to provide a precise estimation of the catfish’s age. Consulting with fisheries experts or biologists familiar with the specific species may yield more accurate insights.

How big is a 30 pound catfish?

The size of a 30 pound catfish can vary depending on the species and its individual characteristics. However, as a general guideline, a 30 pound catfish can be considered quite large. It could typically measure around 36 to 40 inches in length, although this can vary. Additionally, the girth of the catfish can also contribute to its overall size and weight.

Is a 10 lb catfish good to eat?

Yes, a 10 lb catfish can be good to eat. Catfish is a popular fish for culinary purposes and can be enjoyed in various dishes. The taste and texture of the fish can be quite favorable, especially when prepared fresh and cooked properly. However, individual preferences may vary, so it’s always a good idea to ensure the catfish is sourced from clean waters and properly cooked to ensure food safety and optimal flavor.

How many pounds is a 20 inch catfish?

The weight of a 20-inch catfish can vary depending on the species and its overall body condition. However, as a rough estimate, a 20-inch catfish might weigh approximately 2 to 4 pounds. Keep in mind that this is just an approximation, and the actual weight can vary. Factors such as species, habitat, and feeding patterns can influence the weight of a catfish.

What weight sinker for catfish?


The weight of the sinker used for catfishing can vary depending on several factors such as the size of the catfish, water current, fishing technique, and bait used. Here are some general guidelines:

  1. For smaller catfish: If you’re targeting smaller catfish species, such as channel catfish or bullheads, using sinkers in the range of 1/2 to 2 ounces (14 to 56 grams) should be sufficient in most situations.
  2. For larger catfish: When targeting larger catfish species, such as flathead or blue catfish, heavier sinkers are usually required to keep the bait stationary and reach deeper water. Sinkers in the range of 2 to 8 ounces (56 to 227 grams) or more may be necessary depending on the conditions.
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It’s important to consider the fishing environment and adjust the weight of the sinker accordingly. Factors such as strong currents, deep water, or fishing from a boat may require heavier sinkers to maintain proper bait presentation and hold bottom effectively. Experimenting with different sinker weights can help you determine what works best for your specific fishing situation.

What is the heaviest catfish ever caught?

Heaviest catfish ever caught is the Mekong giant catfish (Pangasianodon gigas), which holds the record for being the largest freshwater fish ever recorded. The largest officially documented Mekong giant catfish weighed 646 pounds (293 kilograms) and measured about 9 feet (2.7 meters) in length. This record-breaking catch occurred in 2005 in Thailand’s Chiang Khong district.

Average catfish weight


The average weight of a catfish can vary depending on the species, habitat, and age of the fish. However, to provide a general idea, let’s consider some commonly targeted catfish species:

  1. Channel Catfish (Ictalurus punctatus): Adult channel catfish can range in weight from 1 to 15 pounds (0.5 to 7 kilograms), with the average weight typically falling between 2 to 5 pounds (0.9 to 2.3 kilograms).
  2. Blue Catfish (Ictalurus furcatus): Blue catfish can grow much larger than channel catfish. The average weight of adult blue catfish can range from 10 to 40 pounds (4.5 to 18 kilograms), with some individuals exceeding 100 pounds (45 kilograms).
  3. Flathead Catfish (Pylodictis olivaris): Flathead catfish are known for their larger size. Adult flathead catfish commonly weigh between 10 to 30 pounds (4.5 to 13.6 kilograms), with some reaching weights exceeding 50 to 60 pounds (22.7 to 27.2 kilograms).

Please note that these weight ranges are rough estimates, and catfish weights can vary greatly depending on various factors. Additionally, there are other catfish species not mentioned here that have their own unique size ranges.

Blue catfish age by weight


The age of a blue catfish can vary based on its weight, but it’s important to note that age estimation by weight alone can be challenging and imprecise. Growth rates can differ depending on various factors such as food availability, habitat quality, and genetic factors. Nevertheless, here’s a general guideline for estimating the age of blue catfish based on weight:

  1. 1-5 pounds (0.5-2.3 kilograms): Blue catfish within this weight range are typically considered to be juvenile fish, generally ranging from 1 to 3 years of age.
  2. 5-20 pounds (2.3-9 kilograms): Blue catfish within this weight range are usually considered sub-adults, with ages ranging from 3 to 7 years.
  3. 20-50 pounds (9-23 kilograms): Blue catfish falling in this weight range are typically considered adults, ranging from 7 to 15 years of age.
  4. 50+ pounds (23+ kilograms): Blue catfish that exceed 50 pounds in weight are generally older individuals, potentially ranging from 15 to 30 years of age or even more.
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These age estimates are approximate and can vary depending on the specific conditions and growth rates of the catfish population in a particular area. For more accurate age determination, otolith (earstone) analysis or other specialized techniques can be employed by fisheries scientists.

Channel catfish size by age


The size of channel catfish can vary based on their age, but it’s important to note that individual growth rates can differ depending on various factors such as food availability, habitat conditions, and genetics. Here’s a general guideline for channel catfish size based on age:

  1. Juvenile Stage (0-1 year): During their first year, channel catfish can grow to be around 6 to 10 inches (15 to 25 centimeters) in length.
  2. Sub-Adult Stage (1-3 years): By the end of the third year, channel catfish typically reach lengths of 12 to 18 inches (30 to 45 centimeters).
  3. Adult Stage (3+ years): After the third year, channel catfish are considered adults. They can continue growing, with average adult sizes ranging from 18 to 24 inches (45 to 60 centimeters), although larger individuals exceeding 30 inches (75 centimeters) in length are not uncommon.

Please note that these size ranges are rough estimates and can vary depending on the specific conditions and growth rates of the catfish population. Additionally, factors such as water temperature, food availability, and genetics can influence the growth and size of individual channel catfish.

Flathead catfish weight


Flathead catfish (Pylodictis olivaris) are known for their large size. The weight of flathead catfish can vary greatly depending on factors such as age, habitat, and food availability. Here’s a general guideline for estimating the weight of flathead catfish:

  1. Juvenile Flathead Catfish: Juvenile flathead catfish, typically under 1 year of age, can weigh around 1 to 5 pounds (0.5 to 2.3 kilograms).
  2. Sub-Adult Flathead Catfish: Sub-adult flathead catfish, between 1 and 5 years of age, can range in weight from 5 to 20 pounds (2.3 to 9 kilograms).
  3. Adult Flathead Catfish: Adult flathead catfish, over 5 years of age, can attain significant weights. Average adult weights typically range from 10 to 30 pounds (4.5 to 13.6 kilograms). However, larger individuals weighing over 50 pounds (22.7 kilograms) are not uncommon, and some trophy-sized flathead catfish can exceed 100 pounds (45 kilograms).

It’s important to note that these weight ranges are general estimates, and flathead catfish can exhibit significant variability in size and weight depending on their environment and individual factors.

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