Gallons per Square Foot Calculator
Convert between area, volume, and liquid coverage for pools, tanks, and containers
Calculate Gallons per Square Foot
Base area of the container or surface
Height or depth of liquid in container
Calculation Results
Formula: 1 cubic foot = 7.48052 US gallons
Calculation: Gallons per sq ft = Height (ft) × 7.48052
Height: 0.00 feet
Coverage Analysis
Practical Examples
Swimming Pool Water Volume
Pool: 20 ft × 10 ft = 200 sq ft area
Depth: 4 feet average
Calculation: 4 ft × 7.48052 = 29.92 gal/sq ft
Total volume: 200 sq ft × 29.92 gal/sq ft = 5,984 gallons
Water Tank Storage
Tank base: 8 ft × 8 ft = 64 sq ft area
Height: 6 feet
Calculation: 6 ft × 7.48052 = 44.88 gal/sq ft
Total volume: 64 sq ft × 44.88 gal/sq ft = 2,872 gallons
Reverse Calculation: Find Area
Given: 1,000 gallons of water, 3 feet depth
Gallons per sq ft: 3 ft × 7.48052 = 22.44 gal/sq ft
Required area: 1,000 gal ÷ 22.44 gal/sq ft = 44.6 sq ft
Volume Conversion Reference
1 Cubic Foot =
7.48052 US gallons
28.3168 liters
1,728 cubic inches
1 US Gallon =
3.78541 liters
231 cubic inches
0.133681 cubic feet
1 Square Foot =
144 square inches
0.092903 square meters
Common Applications
Calculation Tips
Measure depth at multiple points for irregular containers
Account for displacement by objects in the container
Use average depth for sloped bottoms
Consider freeboard space in tanks and pools
Understanding Gallons per Square Foot
What is Gallons per Square Foot?
Gallons per square foot is a measurement of liquid volume per unit area. It represents how many gallons of liquid would cover one square foot of surface area at a specific depth. This measurement is crucial for calculating water volumes in pools, tanks, and other containers.
Key Formula
Gallons per sq ft = Height (ft) × 7.48052
This formula uses the conversion factor that 1 cubic foot equals 7.48052 US gallons.
Common Applications
- •Swimming pool water volume calculations
- •Water tank and storage capacity planning
- •Aquarium and pond volume estimation
- •Industrial liquid storage calculations
- •Paint and coating coverage planning
Conversion Factors
Volume Conversions:
1 cubic foot = 7.48052 US gallons
1 US gallon = 3.78541 liters
Area Conversions:
1 sq ft = 144 sq inches
1 sq meter = 10.7639 sq feet