What is the formula for calculating hot tub capacity?

To calculate the capacity of a hot tub, you can use the formula: Volume = Length × Width × Depth × 7.48, where the dimensions are in feet, and the factor 7.48 converts cubic feet to gallons. Alternatively, if the hot tub has an irregular shape, you can estimate the capacity by measuring the average depth and using the formula for the volume of a cylinder: Volume = π × (Radius²) × Depth, and then convert to gallons. Always remember to account for the water displacement caused by bathers.