Measuring a fish without a scale?

Question

If you've caught a fish, how do you accurately measures its weight without a scale? I've heard the formula was length X girth X girth. is this true?

Answer 1

This might not help, but you will always have a scale! Use the fish scales! ROFL!

Answer 2

mutiply girth by lenght and divide by 800

Answer 3

yup length x girth squared

Answer 4

You heard right but, here's a link that'll do it for ya' ~ saves the time, pencil, paper and calculatin' ;)... < ' ( (( > <

http://www.boatingsidekicks.com/fishweig...

Answer 5

The correct way to measure any fish for International Game and Fish Association (I.G.F. A.) rules is from the middle of the tail in the fork to the tip of the nose. Use the length and width to figure out the weight of the fish.

Here is the math needed to weigh a fish without the need of a scale. Calculate the size of the fish with the formula: length times girth squared, divided by eight hundred e.g. 33” x 21” x 21” /800 = 18.191 pounds. Anglers who don’t have a measuring device can use dollars for size comparison with photographs for later calculations. A dollar is almost exactly six inches long; take a photograph with the dollar bill in the same frame to get a near exact idea of how big the fish is. You can also make markings on your fishing rod or take a measurement of your arm. What works great though is to go to a sewing/fabric shop and buy a flexible measuring tape. The roll up to fit in your pocket, they are waterproof and they are cheap.