When measuring the length of the fish, be sure to measure from the lower jaw to the tail. Select the species closest to the fish you caught. The weight results will be extremely close to the actual weight of the fish. Bonefish Weight Calculator. Weights are the average for the length. Click the Calculator button below and print out the take along copy and surprise your Captain and crew with the accuracy of your estimates. 3. Brown Trout; Rainbow Trout; Type. Calculate How Much Your fish Weighs: Fishing Forums, Reports and Blogs • Minnesota Fishing Forum • Minnesota ... • Fish Weight Calculator • Doctor Sonar's Newsletter. Over 250 Saltwater Fish Species Around Southern Africa! Length to weight calculations are based off measurements from 453 bonefish caught in the Florida Keys. You can then manually use the formula in this bass weight calculation chart below to calculate the approximate weight of your Largemouth or Smallmouth bass. To use the calculator, simply enter the length from the tip of the nose to the center of the tail of your fish and use the girth of the fish as measured just in front of the dorsal fin. Girth: Measured immediately in front of the dorsal fin (Typically the fattest part of the fish).It is possible to estimate the weight of your fish without a girth measurement but it will not be as accurate. Enter the measurements of your fish (The calculator will approximate the girth measurement if you don't have one.) Estimate the weight of your fish by measuring the length and girth. Length To Weight. Over 250 Saltwater Fish Species Around Southern Africa! Measure length from lower jaw to middle of tail fork and convert to inches. This has enabled length and weight relationships to be calculated for some fish species which can be used to estimate weight of a fish by measuring its length. The LENGTH-WEIGHT table presents the a and b values of over 5,000 length-weight relationships of the form W = a × L b , pertaining to about over 2,000 fish species. Bouncing fish on scale moving slider bar to far for accurate reading. Scientific calculator to tell you your fish weight. Albacore; Baardman; Baardman (Slender) Barracuda (Great) Barracuda (Pickhandle) Barracuda (Sawtooth) Barrracuda (Blackfin) Bass (Brindle) Weighing fish by measuring them helps minimize any potential harm to the fish. Fish Weight Calculator by Length for Southern Africa. Fish Biologists have collected vast quantities of length and weight data from a variety of fish species. Fish Length/Weight Calculators. Click the Calculate button to see the estimated weight of the fish. How to Calculate Fish Length Weight Relationship? If you have ever been in a situation where you caught that fish of a lifetime and are without your scales then this page is for you. Guessing the weight (Great fishermen can be several pounds off actual weight) Before you release your fish you can measure it by using a dollar bill (six inches long) or measure it beside your fishing rod. Pike have a shape factor of 900. The "long length" is the overall total length of the fish and is NOT used by this calculator. If you measure accurately, you will be surprised how close your estimate gets to the actual weight at the scales. * Click Reset first if you wish to calculate additional weights. When measuring girth, measure at the widest part of the fishes body. WEIGHT = LENGTH x GIRTH 2 / SHAPE FACTOR WEIGHT= 20 x (12 2) / 750 WEIGHT= 20 x 144 / 750 WEIGHT= 2880 / 750 Calculate length and weight for salmon using the Sturdy Scale before you release your catch to get an idea of the size of the fish you let get away. This applies especially to ‘Catch and Release’ to preserve the health of our fish stocks. * PLEASE NOTE: This is an estimate only. We facilitate and provide opportunity for all citizens to use, enjoy, and learn about these resources. Fish Weight Calculator: Overview Features Species Download Contact Fish Species. Fish Weight Calculator: Overview Features Species Download Contact Calculate the weight of YOUR catch by simply measuring it's length! Square girth and multiply by length - Divide by 800 Example: Girth = 40" - squared = 1600 Length = 100" Multiply girth squared x length (1600 x 100 = 16000) divide by 800 for a weight of 200lbs. The calculator uses the standard accepted formula of weight estimation that we have found to be very accurate to actual weights when tested against fish weighed on certified scales. Northern Pike Weight Formula. If applicable on the fish, the bill and tail are both added length that cannot be relied upon for estimating weight so scientists and sporting enthusiasts use the lower jaw as a way to be more accurate and fair in comparison estimation. 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