e85Cal help you calculate your ethanol percentage goal.

It fast, simple, and easy to use. Just enter the following information:

1) How big is your gas tank?
2) What is the ethanol % in the standard pump gas?
3) What is the ethanol % in the ethanol pump gas?
4) What is your target ethanol % mix goal?
5) What is your current ethanol % min in your vehicle?
6) What is your current fuel level % in your vehicle?

Results will display how many gallons or liters of standard and ethanol gas to pump in your vehicle based on your input.