how to calculate the water volume of this thing?
- Thread starter nuri_pppp
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Fishyfreeonz
Fish Fanatic
If it's roughly close to the shape of a side of a sphere it would be around 10 gallons.
Fishyfreeonz
Fish Fanatic
And a cone of those dimensions would be 5.2 gallons so it's probably somewhere in-between.
empty it out
then take a container with known volume such as a 2 liter bottle and see how many containers of water it takes to fill it
then take a container with known volume such as a 2 liter bottle and see how many containers of water it takes to fill it
Normally to work out the volume of water in a round pond its
pie x R2 x height, divide by 1000 equals volume in litres.
(pie is 3.14)
(R2 is radius squared, half the diameter multiplied by itself)
(height is top of the water level to bottom of container, or top of substrate if there's any in the container)
Measurements are taken in cm coz I don't know the formula for inches.
Measurements are taken on the inside of the container.
Because the container is cone shaped, I would take the maximum diameter and the minimum diameter and add them together, then divide by two. That will give you an average width, which will be less than the top and more than the bottom. Then use the formula above.
21 inch wide at top
10 inch wide at bottom (estimating)
10 inch high
average 40cm diameter (radius is 20cm)
height 25cm
equals about 30 litres.
or do what Fishmanic suggested.
pie x R2 x height, divide by 1000 equals volume in litres.
(pie is 3.14)
(R2 is radius squared, half the diameter multiplied by itself)
(height is top of the water level to bottom of container, or top of substrate if there's any in the container)
Measurements are taken in cm coz I don't know the formula for inches.
Measurements are taken on the inside of the container.
Because the container is cone shaped, I would take the maximum diameter and the minimum diameter and add them together, then divide by two. That will give you an average width, which will be less than the top and more than the bottom. Then use the formula above.
21 inch wide at top
10 inch wide at bottom (estimating)
10 inch high
average 40cm diameter (radius is 20cm)
height 25cm
equals about 30 litres.
or do what Fishmanic suggested.
Last edited:
Uberhoust
Fish Herder
To calculate accurately you would have to some mathematical work, either taking the diameter at different depths and calculate the cylinder volume at those points to give you an approximation, or determine an equation for the side profile of the container and use calculus to determine the volume. Either method is tedious to say the least.
But the best and most accurate would be fill the container, then measure the water from it as @Fishmanic suggests. I wouldn't use a two litre pop bottle though, the narrow opening will make it hard to measure. You likely have a bucket somewhere that you can mark the number of litres or gallons, I have white utility buckets that I pour a litre of water into the bucket mark the height with a permanent marker, them pour another litre in mark it, continue.... It takes a few minutes to mark up the bucket but once you are done you can use it multiple times, and if you have multiple buckets the same size you can use your original bucket to mark them up too. You also can buy buckets with volume marks already on them, but they are usually kind of pricey.
But the best and most accurate would be fill the container, then measure the water from it as @Fishmanic suggests. I wouldn't use a two litre pop bottle though, the narrow opening will make it hard to measure. You likely have a bucket somewhere that you can mark the number of litres or gallons, I have white utility buckets that I pour a litre of water into the bucket mark the height with a permanent marker, them pour another litre in mark it, continue.... It takes a few minutes to mark up the bucket but once you are done you can use it multiple times, and if you have multiple buckets the same size you can use your original bucket to mark them up too. You also can buy buckets with volume marks already on them, but they are usually kind of pricey.
There is another way, weigh the container and write the weight down. Then fill the container while it's on the scales and write the weight down. Take the weight of the container away from the total weight and the result is the water.
1 litre of water = 1 kilogram (can't do it for gallons or pounds).
If you have 35kg total weight, and the container is 3 kg, then there is 32 kgs of water, which is 32 litres.
1 litre of water = 1 kilogram (can't do it for gallons or pounds).
If you have 35kg total weight, and the container is 3 kg, then there is 32 kgs of water, which is 32 litres.
Fishyfreeonz
Fish Fanatic
1 gallon weighs 8.34 lb.Similar threads
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