Calculating Gallons - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 4 Old 11-30-2008, 01:36 AM Thread Starter
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Calculating Gallons

What is the formula for calculating gallons based on dimensions?
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post #2 of 4 Old 11-30-2008, 01:54 AM
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(Length * Width * Height)/231

This is for measurements done in inches.

4 8 15 16 23 42
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post #3 of 4 Old 11-30-2008, 07:45 PM
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Another way to get a quick estimate is volume in cubic feet times 7.5 gallons per cubic foot. I can usually do it in my head and am within fractions of a gallon of the real number in a very large tank. No way I can multiply out the larger numbers of cubic inches to divide by 231 but that is closer to the accurate answer.
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post #4 of 4 Old 11-30-2008, 10:24 PM Thread Starter
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Thanks. Just wanted to verify that it was the size I remember. I have a shed full of empty ones and it is hard to keep track.
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