E85 Calculator

An E85 calculator is a tool that helps you determine the amount of ethanol fuel to be added to your gasoline engine for optimal performance. The calculator takes into account the current fuel level, the desired ethanol ratio, and the engine's fuel capacity to provide you with the exact amount of E85 fuel needed. This tool is especially useful for flex-fuel vehicles that are designed to run on a blend of gasoline and ethanol. With the E85 calculator, you can ensure that your vehicle is running at peak performance and minimize the risk of damage to your engine.

Please select from one of the presets below or calculate with a custom tank size.


E85 Input Gasoline Input
Gallons: Gallons:
Octane: Octane:
Ethanol %: Ethanol %:
Results



Custom Tank Size
Enter tank size then select which blend you would like to calculate.

Tank Size 


G Series Presets (G20, G80, G82)
15.6 gallon gas tank


G Series Presets (G30)
18 gallon gas tank


G Series Presets (G01)
21.9 gallon gas tank


G Series Presets (G05)
21.9 gallon gas tank


F Series Presets (F30, F31 F32, F80, F82)
15.8 gallon gas tank


F Series Presets (F20, F22, F87)
13.7 gallon gas tank


E Series Presets (E90, E92)
16.1 gallon gas tank


E Series Presets (E90, E92)
16.6 gallon gas tank