Calculate the water volume and fill cost of a swimming pool.
A rectangular pool holds its length times width times depth in cubic feet. Each cubic foot holds about 7.48 gallons, and the fill price follows from the water rate. Knowing the volume guides chemical dosing, pump sizing and the true cost of filling or topping up the pool.
Pool Volume
Gallons = length x width x depth x 7.48
Gallons = length x width x depth x 7.48 A rectangular pool holds its length times width times depth in cubic feet. Each cubic foot holds about 7.48 gallons, and the fill price follows from the water rate.
Knowing the volume guides chemical dosing, pump sizing and the true cost of filling or topping up the pool.
This calculator takes 4 inputs: Pool length, Pool width, Average depth, Water price per 1000 gal. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.