2,700 gallons of water in an 18x36 pool

Standard 18x36 pool holds approximately 2,700 gallons of water. This calculation assumes average depth and standard pool dimensions.

Pool Volume Calculation Methods

• Rectangular pools use: Length × Width × Average Depth × 7.5
• Round pools use: Diameter² × Average Depth × 5.9
• Oval pools use: Length × Width × Average Depth × 5.9

Volume Comparison Table

Factors Affecting Pool Volume

1. Average depth directly impacts total gallons
2. Shallow end vs deep end measurements affect calculations
3. Pool shape variations change volume significantly

Water Measurement Tips

• Measure from floor to water level
• Calculate average depth for irregular shapes
• Use 7.5 multiplier for rectangular pools