E85 Mix Ethanol Calculator
Adam Keninger
About this app
- Age 10
- Updated Jul 28, 2019
- OS IOS
Editor reviews
E85 Mix Ethanol Calculator is a precise fueling utility for drivers, tuners, and motorsports enthusiasts to plan accurate ethanol blends for flex-fuel and E85 setups. Quickly determine how much E85 and regular gasoline to add to reach a target ethanol percentage, reduce guesswork at the pump, and protect your engine during street or track use.
Core features:
- Target blend calculation: Enter tank size, current fuel, and desired ethanol percentage to get exact E85 and gasoline amounts.
- Real-world accuracy: Account for actual pump ethanol content (E70–E85, E10, etc.) and choose gallons or liters for easy use anywhere.
- Fast workflows: Save favorite targets and sources for quick repeat fills, with optional cost and octane impact estimates to inform fueling decisions.
Screenshots
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How to use:
1. Install and open the app, then set your preferred units to gallons or liters in Settings.
2. Enter your current tank level and current ethanol content if known, or start from an empty tank scenario.
3. Add your available fuel sources and their ethanol percentages, for example E85 measured at E75 and standard gasoline at E10.
4. Set your target ethanol percentage and tap Calculate to see the exact amounts of E85 and gasoline to add.
5. Save the setup as a preset for faster future fill-ups, and adjust the pump ethanol percentage as conditions change.