Pond Calculator — Calculate Your Pond Dimensions, Volume & Liner Size

Pond Calculator

Calculate pond volume, liner size, water requirements, and costs for your garden pond project. Plan your perfect water feature with our comprehensive pond calculator.

Step 1: Pond Dimensions

2.5 ft

Understanding Pond Dimensions

Accurate measurements ensure proper liner sizing and water volume calculations. Consider the deepest point for fish habitats and shallow areas for marginal plants.

Step 2: Materials & Costs

About Pond Liners

PVC liners are affordable but less durable. EPDM rubber is flexible, UV-resistant and lasts 20+ years. HDPE is puncture-resistant. Preformed shells are easiest to install but limited in shape.

Pond Calculation Results

Summary
Size Comparison
Cost Analysis

Estimated Total Volume

1,125 gal
Liner Size: ~200 sq ft
Surface Area
60 sq ft
Water Needed
1,125 gal
Liner Cost
$150
Total Estimated Cost
$450

Pond Size Comparison

Pond Type Dimensions Volume Liner Size Estimated Cost

Pond Cost Analysis

Pond Volume Formula

Rectangular Pond: Length × Width × Average Depth × 7.48 (gallons)

For rectangular ponds, multiply dimensions to get cubic feet, then multiply by 7.48 to convert to gallons. Oval ponds use length × width × depth × 6.7. Circular ponds use π × radius² × depth × 7.48.

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