How many gallons of water are in a square foot?
The volume in cubic feet is equal to the gallons multiplied by 0.133681. For example, here’s how to convert 5 gallons to cubic feet using the formula above. 5 gal = (5 × 0.133681) = 0.668403 ft³.
Feet to Gallons Formula: Gallons = Length * Width * Depth * 7.48052 Feet to Gallons Definition Easily convert feet into gallons with this simply to use cubic feet to gallons calculator.
Answer: This is a simple volume of a box calculation. The formula is Volume = Width · Height · Depth. In our case that’s 25m x 12.5m x 2m = 25m x 25m 2 = 625m 3 so we need six hundred twenty five cubic meters of water. Example 2: L-shaped pool. A slightly more complex shape would be a swimming pool with an L-shape.
If you have the depth, you can calculate the gallons of water per cubic foot by performing some simple mathematical operations. Measure the depth of the structure in which the water is located. Use a tape measure to do this. Multiply the depth in feet times the width and length of the pool (square footage) to find the cubic feet.
First you multiply 18′ x 36’= 648 sq. ft. Then you find the average depth, the simple way is to add the shallow end and deep end depth and divide by two. That is 3.5′ + 6’= 9.5′ then 9.5′ / 2= 4.75 So now you multiply 648 x 4.75= 3078 now we multiply that number by 7.48 to get the total volume.
Now get ready to do some math. It takes about 0.623 gallons of water per square foot (just over a half gallon) to cover your lawn with one inch of water. To figure out how much water you need to use to reach that one-inch mark, multiply the length of your yard by its width. This is called its square footage.
7.48 is a the number of gallons in a square foot of space.