Free pond calculators

Find Your Pond Solution

Our Pond Calculator page provides easy-to-use calculators for pond enthusiasts. Calculate the number of gallons in your pond, liner size needed, electric cost to run a unit, and more. Simply input your data and get your results instantly!

Aerating fountain in a backyard pond with a dock
11free calculators

Find Pond Volume

Calculates pond volume in gallons based on pond size.

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Find Liner Size

Determines the size of liner needed for a pond based on its dimensions.

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Dock De-Icer Size

Finds the de-icer size that keeps your dock or boat lift ice-free, from the Kasco, Scott and Ice Eater sizing charts.

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Pond Treatment Dosage

Works out how much bacteria, barley, clarifier or dye to add, from the directions for the products we sell.

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Find Aeration Size

Determines the appropriate size of an aeration system for pond based on dimensions.

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Lake Acres & Acre-Feet

Turns your lake or pond size into acres, acre-feet and gallons for treatments and aeration.

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Find Fountain Size

Determines the recommended size of fountain for a given pond size.

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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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Pump Head Pressure

Calculates the pressure needed for pond pump based on its height and other factors.

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Electric Cost

Calculates the cost of running an electrical unit for a given time period.

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Ice Rink Liner Size

Finds the liner size, boards and water you need for a backyard ice rink.

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Not sure what you need?

Take the 1-minute pond quiz

Answer a few quick questions and get a plan made for your pond, with the products that fit it.

  • Up to 6 questions
  • Your own pond plan
  • Products that fit
Start the quiz

From the Desk of Our Aquatic Biologist

Latest Blog Posts

Product guide, updates and interesting news
De-Icer or Aerator? How to Keep Your Fish Alive Under Midwest Ice De-Icer or Aerator? How to Keep Your Fish Alive Under Midwest Ice Every spring we get the same phone call. The ice goes out, the pond owner walks down to the shoreline, and there they are: the bass, the bluegill, the catfish they've been feedi... Read article Algae Control in the Hot Summer Months: Managing Nutrients, Cyanobacteria, and Pond Health Algae Control in the Hot Summer Months: Managing Nutrients, Cyanobacteria, and Pond Health As summer temperatures rise, ponds and lakes can become increasingly vulnerable to algae blooms. Warm water, longer periods of sunlight, and increased nutrient availability can... Read article The 5 Best Pond Aeration Systems The 5 Best Pond Aeration Systems A healthy pond needs more than clean-looking water. A good aeration system keeps oxygen moving through the water column, reduces stagnant areas, helps manage odors, and creates ... Read article Why Is My Pond Green in July? — Algae Causes & Midwest Fixes Why Is My Pond Green in July? — Algae Causes & Midwest Fixes If you've looked outside this July and wondered, "Why is my pond green?", you're not alone. Across the Midwest, many pond owners experience green pond water during the hottest w... Read article Koi Pond Ideas: Beautiful Backyard Designs That Keep Your Fish Happy Koi Pond Ideas: Beautiful Backyard Designs That Keep Your Fish Happy Are you dreaming about a backyard koi pond with clear water, colorful fish, a relaxing waterfall, and maybe even a little bridge that makes you feel like you’ve entered your pea... Read article What Do Crayfish Eat? A Pond Owner’s Guide to Their Real Diet What Do Crayfish Eat? A Pond Owner’s Guide to Their Real Diet If you’ve ever flipped over a rock near the shoreline and seen a little clawed creature dart backward into the mud, you’ve met one of the hardest-working members of your pond. C... Read article

Your Trusted Pond Experts!

We guarantee your shopping experience will be fulfilling and easy! Not sure what you need or how to install it? Check out our extensive blog posts or give us a call at (833) 779 2837 and we’ll be happy to assist you. Thank you and Enjoy Your Pond!

Mon–Fri 8am–6pm Sales@midwestponds.com