Pond Calculator

Size a garden pond or water feature in minutes. Enter the shape and dimensions to get the water volume in gallons and liters, plus the liner size to order.

ft
ft
ft
Accounts for sloped sides and uneven bottom.

🐟 Koi-ready

Koi need at least 1,000 gallons and 3+ ft depth — the verdict flags it.

💰 Liner sizing

Adds overlap on every side so you order the right liner roll.

💧 Pump sizing

Match your filter pump to the true water volume.

🔒 Private

All calculations run locally in your browser.

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