To calculate the volume of your square or rectangular tank or reservoir, you need to do the calculation LxWxH where:

L is the length of your tank

W is the width of your tank

H is the height of your tank

You must provide inside dimensions for your calculation to be accurate. Also, your result will be in cubic units. You must maintain the same units on all inputs to get a correct answer from the calculator.

For example, if you use feet, your answer will be in cubic feet. If you use meters, your answer will be in cubic meters.

Reservoir Length Reservoir Width Reservoir Height Cubic Volume