Ethanol Fuel Calculator

The Ethanol Fuel Calculator helps you calculate the amount of ethanol-based fuel (such as E85) and regular petrol needed to achieve your desired ethanol percentage in your fuel tank. You might want to dilute the pump gasoline in your tank with a high percentage ethanol-based fuel to reach your desired mixture to increase knock resistance.

Follow the instructions to use the E85 calculator effectively. Refer to the fuel table for common ethanol and petrol content percentages in various fuels.

Results

Total fuel to add: 0.00 liters

Total fuel in tank: 0.00 liters

Fuel Type Reference

Fuel TypeEthanol %Gasoline %
E55%95%
E1010%90%
Sunoco Green E1515%85%
VP Racing Fuels C2525%75% High-Octane Gasoline%
E5050%50%
E8585%15%
E85 Race Fuel85%15% High-Performance Gasoline%
VP Racing Fuels C8585%15% Performance Enhancers%
Sunoco E85-R85%15% Racing Gasoline%
Rockett Brand E85-R85%15% High-Performance Gasoline%
Renegade Race Fuels E8585%15% High-Performance Gasoline%
Renegade Race Fuels Pro E8585%15% High-Octane Racing Gasoline%
E9898%2%
Renegade Race Fuels E9898%2%

How To Use The Calculator

1. Select the Measurement Unit

Choose "Litres" or "Gallons" from the dropdown menu based on your preferred unit of measurement.

2. Input Your Tank Information

Entering your tank capacity and current fuel volumes will allow the calculator to determine how much of the new fuel is required to be added to achieve the ethanol content desired without running out of room in the tank.

3. Set Current and Desired Ethanol Percentages

Use the range sliders to set the current ethanol percentage in your fuel and your desired target percentage. Refer to the fuel table to find the ethanol percentage of your current fuel.

4. Specify New Fuel Ethanol Content

This section displays the ethanol content percentage you need to add. It is set to 85% by default, as this is the most common ethanol based fuel used in internal combustion engines aside from regular pump gasoline.

5. Review Results

At the bottom of the calculator, you will see the results displayed showing the total fuel to add and total fuel volume after adding the new fuel.

Disclaimer and Safety Information

General Disclaimer

The Ethanol Fuel Calculator provided on this website is for informational purposes only. While we strive to ensure accuracy, we make no guarantees regarding correctness or suitability for any particular purpose. Users assume all risks associated with the use of this calculator.

Safety Information

  • Always check your vehicle's owner's manual to ensure compatibility with ethanol-based fuels
  • Follow all safety precautions when handling fuel, including avoiding open flames, sparks, and smoking
  • Store and transport fuel in approved containers only
  • Keep fuel out of reach of children and pets
  • Do not mix ethanol-based fuels with other fuels unless you are certain of your vehicle's requirements

User Responsibility

It is the user's responsibility to ensure that their vehicle is compatible with ethanol-based fuels and to follow all manufacturer guidelines and recommendations. Improper use of ethanol-based fuels can result in significant damage to the vehicle and may void the vehicle's warranty.

By using the Ethanol Fuel Calculator, users agree to the terms of this disclaimer. If you do not agree with any part of this disclaimer, please do not use the calculator.