convert from gallons to acre feet
Convert Gallons to Acre-feet: Divide Gallons by 325,851. Example: An 800,000 gallon pond = 2.46 acre feet. Convert Acre-feet to Gallons: Multiply Acre-feet by 325,851. Example: A 5 acre-foot pond = 1,629,255 gallons. Background. One acre-foot is equivalent to one-acre of water that is one-foot deep. An acre is a measure of surface area that totals 43,560 square feet. An acre can be of any shapeâa rectangle, a triangle, a circle, or even a starâso long as its area is exactly 43,560 square feet.