Why Use This Calculator?

For users in the USA, knowing the exact gallons per square foot is crucial for landscaping, pool maintenance, and construction. This tool uses the standard US Liquid Gallon conversion (1 cubic foot ≈ 7.48 gallons).

Key Formulas Used

1. Finding the Ratio:
(Depth in inches ÷ 12) × 7.48 = Gallons per Square Foot

2. Finding Total Volume:
Area (sq ft) × (Depth in inches ÷ 12) × 7.48 = Total Gallons

Expert Tip

Always measure depth at multiple points to get an average, especially for uneven surfaces like lawns or pool floors. This ensures your water or chemical calculations are precise.