Free pond calculators
Pond Treatment Dosage Calculator
Find out how much pond treatment to add, based on your pond size and the directions for the products we sell.
Your treatment
Enter a number greater than 0.
Enter a number greater than 0.
Enter a number greater than 0.
Don't know the gallons? Use the pond volume calculator.
Don't know the acres? Use the lake size calculator.
The highlighted line shows what each box measures. Your numbers appear on the drawing.
Your results
Choose a product and enter your pond size to see how much to add.
Next step
How we calculate this
- Each rate comes from the directions on that product's page. Ranges show the label's low and high rate.
- Dose = your pond size ÷ the label's amount (for example 1,000 gallons or 1 surface acre) × the label rate. Packets and blocks round up to whole units.
- Acre-feet = surface acres × average depth in feet.
- Always follow the label on the product you receive.
More Useful Calculators
Calculators for pond enthusiasts
Find Pond Volume
Calculates pond volume in gallons based on pond size.
Lake Acres & Acre-Feet
Turns your lake or pond size into acres, acre-feet and gallons for treatments and aeration.
Find Aeration Size
Determines the appropriate size of an aeration system for pond based on dimensions.
Waterfall Pump Flow
Finds the pump flow your waterfall needs from its width, then hands it to the pump head calculator.
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