Ethanol Calculator - E85 Fuel

Ethanol Calculator helps you determine exactly how much pure ethanol to add to your fuel tank to reach your desired ethanol ratio. KEY FEATURES: - Calculate required ethanol amount instantly - Preset buttons for E10, E20, E25, E50, E85 - Extra fuel mixing calculator - Real-time results as you adjust sliders - Dark & Light mode support - Available in 30 languages PERFECT FOR: - Flex fuel vehicle owners - E85 enthusiasts & tuners - Race fuel blending - Biofuel mixing calculations Simply enter your current fuel amount, current ethanol percentage, and target ethanol percentage. The app instantly calculates how much pure ethanol you need to add. The extra settings feature lets you factor in additional fuel purchases and their ethanol content for precise mixing calculations. Note: Calculations are based on mathematical formulas using 100% pure ethanol as reference.