This is for you who have a pot with no markings on it that tell you the
capacity in gallons or quarts. Smaller pots
usually have the quart capacity stamped on them.

We're working with cubic inches here. A cubic inch is a square that is
1" X 1" X 1" in size.

Here is how to calculate the round pot.

Equation: Pi (3.14) times the radius (diameter divided by 2) squared
(times itself), times the depth of the pot in inches divided by 231 (231
cubic inches in a gallon of fluid).

Example:

I have a pot that is 18" in diameter (measure across the top side to
side) and 16" deep. These are rough measurements to the inch.

Pi = 3.14

The radius is 9" (18" divided by two)

The radius squared is 9" X 9" which equals 81.

So now we have 3.14 X 81 X 16 = 4,069 (this is the total cubic inches in
the pot)

4,069 / 231 = 17.6 (the number of gallons the pot will hold)

Divide 17.6 by 4 and you get 4.4 quarts.

Why would you want to know this seemingly useless information?

Suppose you are going to borrow a big boiler set and want to use my
Boiled Crawfish (or Crab) recipe. First thing you want to be able to at
least estimate is how much water you're dealing with right?

Now you have the way to do it!