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Compute Fluid Volume

Diagram of a Water Tank Do you have a tank in your backyard that stores your heating oil? If so, do you use a dipstick to figure out how much fluid is left in the tank? If you do, then you can use this web page to calculate how much fluid you have remaining in the tank. What you have to know in order to use this page is:
  • the tank diameter
  • the depth of the liquid
  • either the total volume of the tank -or- the length of the tank
A couple of points:
  1. All of the dimensions have to have the same units. In other words, the diameter, depth, and length must all be in feet or all in inches, or all in the units you want. You cannot have the diameter in feet and the depth in inches, for example.
  2. The calculations assume that the tank is cylindrical. In other words, if you were to look at the tank from one end, it would look like a perfect circle.

Step 1: Enter the diameter of the tank:

Step 2: Enter the depth of the liquid in the tank:

Step 3: Enter the units of the diameter, depth, and (if necessary) length:
inches
feet
meters
centimeters

Step 4: Enter the length of the tank or the tank's total volume:
Length
Volume

Step 4a: If you entered a total volume, the units of this volume are
gallons
cubic inches
cubic feet
cubic meters
cubic centimeters
liters

Step 5: Select desired units for the output:
Gallons
Cubic inches
Cubic feet
Liters


© Gary Schafer, 2008

Last updated on 4 October 2008