desertrat2321 wrote:I have a horizantal oval tank 19.25' long by 7' wide by 4.3' tall(approx 3400 gallons). I need to be able to measure how many inches of fuel are in the tank and know how many gallons that represents.

Can anyone help?

Go to:

http://vps.arachnoid.com/TankCalc/index.html This excellent program calculates the volume of round cylinder tanks, with customizable end caps. You can generate a table of volumes per depth, in various length units (inch, cm, etc.).

To calculate the volume of an elliptical cylinder, you will need to use a correction factor. That is addressed toward the bottom of the page under "User Inquiries". I suggest you read the "Tank Wider than Tall" inquiry first, then the instructions on the main page.