Use the following calculators to determine the size or volume of your pond.

For irregular shapes, split your pond into sections, calculate each one, and then add them together for total size or volume.

To calculate average depth, take a number of evenly spaced depth measurements, add them all together, and divide by the total number of measurements taken. In ponds with a continuous evenly sloped bottom, the average depth can be estimated by dividing the maximum depth by 2.

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Surface Acres Calculator
Rectangular Pond:
feet wide * feet long = Surface Acres

Circular Pond:
feet diameter = Surface Acres


Acre Feet Calculator
Rectangular Pond:
feet wide * feet long * average depth (in feet) = Acre Feet

Circular Pond:
feet diameter * average depth (in feet) = Acre Feet


Cubic Feet Calculator
Rectangular Pond:
feet wide * feet long * average depth (in feet) = Cubic Feet

Circular Pond:
feet diameter * average depth (in feet) = Cubic Feet


Total Gallons Calculator
Cubic Feet = Gallons