Enter the water length (ft), the water width (ft), and the water depth (ft) into the Water Volume Calculator. The calculator will evaluate and display the Water Volume. 

Water Volume Formula

The following formula is used to calculate the Water Volume. 

WV = WL * WW * WD / 7.481

  • Where WV is the Water Volume (gallons)
  • WL is the water length (ft) 
  • WW is the water width (ft) 
  • WD is the water depth (ft) 

How to Calculate Water Volume?

The following example problems outline how to calculate Water Volume.

Example Problem #1

  1. First, determine the water length (ft). The water length (ft) is given as 500 .
  2. Next, determine the water width (ft). The water width (ft) is calculated as  200 .
  3. Next, determine the water depth (ft). The water depth (ft) is found to be 40.
  4. Finally, calculate the Water Volume using the formula above: 

WV = WL * WW * WD / 7.481

Inserting the values from above yields: 

WV = 500 * 200 * 40 / 7.481 = 534,687.87 (gallons)


Example Problem #2

The variables needed for this problem are provided below:

water length (ft) = 600

water width (ft) = 700

water depth (ft) = 30

Entering these values and solving gives:

WV = 600 * 700 * 30 / 7.481 = 1,684,266.81 (gallons)