Pond and Lake Calculators

Welcome to our Pond and Lake Calculator Suite — a collection of free tools designed to help you accurately size ponds, determine probiotic treatment needs, and estimate electrical operating costs for fountains and aeration systems. Whether you're a homeowner, contractor, or pond care professional, these calculators give you quick, reliable answers to help manage and maintain your water features.

Pond Probiotics Calculator

Use this calculator to estimate how much Pond Probiotics you’ll need for your pond. Quick-dissolving powder and water-soluble bags are typically reapplied every 2–3 weeks, Muck Pucks every 2–3 weeks, and Muck Blocks about every 30 days. Only apply when water temperature is at least 55°F (13°C), and always follow the dosage and safety directions on the product label.

Pond length (ft.)

Pond width (ft.)

Square Ft.

Average Depth (ft.)

Surface Acreage

Acre Feet

Estimated Product Amounts

Estimated lbs. of Quick-Dissolving Powder –

Estimated # of Water Soluble Bags –

Estimated # of Muck Pucks –

Estimated # of Muck Puck Pails (266 per pail) –

Estimated # of Muck Blocks –

This calculator is for estimation only. Always follow the dosage instructions on the product label and adjust based on water quality conditions.

Operating Cost Calculator

Estimate how much it costs to run your fountain or aerator based on voltage, amperage, local electricity rate, and hours of operation per day. Enter the electrical specs below to see approximate daily, monthly, and yearly power costs.

Volts

Amps

kWh Cost ($)

Hours Run Per Day

Estimated Electrical Use

Watts –

kWh Per Day –

Estimated Daily Cost –

Estimated Monthly Cost (30 days) –

Estimated Yearly Cost (365 days) –

All values are estimates based on the information entered. Actual power usage and cost may vary based on motor load, electrical efficiency, and changes in utility rates.

Pond Size Calculator

Estimate pond surface area and water volume based on shape and average depth. Choose the shape that most closely matches your pond, enter the measurements in feet, and we’ll calculate total square feet, surface acres, gallons, liters, and acre feet.

Pond Shape

Length (ft.) – for rectangular/square ponds

Width (ft.) – for rectangular/square ponds

Average Depth (ft.)

Estimated Pond Size

Total Square Feet –

Surface Acres –

Total Gallons & Liters of Water –

Total Acre Feet –

This calculator provides estimates only. For treatment or equipment sizing, always confirm measurements on site and follow product label directions.