How to Calculate Tank Volume in Gallons and Liters
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How to Calculate Tank Volume in Gallons and Liters

Filling a pool, sizing an aquarium, or ordering heating oil? Tank volume is just the volume of a cylinder or box converted into the capacity units you actually buy in — gallons and litres. This guide covers the formulas for cylindrical and rectangular tanks, the cubic-foot-to-gallon conversions, partially full horizontal tanks, pool and aquarium volume, and the five mistakes that throw the numbers off.

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