A pool volume calculator determines the total water capacity of a swimming pool in gallons or liters based on its shape and dimensions. Knowing pool volume is essential for accurate chemical dosing, equipment sizing, and water treatment planning. For a rectangular pool, the formula multiplies length, width, and average depth, then converts cubic feet to gallons by multiplying by 7.48. For round, oval, and kidney-shaped pools, different geometric formulas apply. The calculator handles all common pool shapes and outputs both imperial and metric volume measurements.
Pool volume calculators are widely used by pool owners, pool service technicians, and chemical suppliers. Accurate volume calculation ensures that chlorine, algaecide, pH adjusters, and stabilizer are dosed correctly to keep the water clean and safe for swimmers. Overdosing wastes money and can irritate skin and eyes, while underdosing leads to algae growth and unsafe water conditions. The calculator is also used to determine the right pump and filter sizing for a given volume. Many pool chemical product labels specify dosage per 10,000 gallons, making pool volume the critical starting point for all maintenance decisions. Free pool volume calculators are available from pool supply retailers and manufacturer websites.