---
title: "E85 Calculator - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "E85 Calculator is your essential tool for precision fuel mixing, designed for performance enthusiasts and flex-fuel vehicle owners.  KEY FEATURES: - Calculate exact amounts of E85 and gasoline needed "
---

# E85 Calculator — United States

![E85 Calculator App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/33/a7/4a/33a74a0c-0314-148f-bf12-de33aad095eb/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Sheharyar Irfan](https://apptail.io/developer/sheharyar-irfan-faoc)
**Category:** Utilities
**Rating:** 1.0/5 (2 ratings)
**Price:** Free
**Bundle ID:** com.Sheharyar.E85-Calculator
**Store:** Apple App Store
**Country:** United States
**Version:** 2.0.1 (released 2025-02-20)
**Original Release:** 2015-09-19
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1029273167)
**AppTail Page:** [https://apptail.io/app/e85-calculator-Wlke/united-states](https://apptail.io/app/e85-calculator-Wlke/united-states)

## E85 Calculator Description
E85 Calculator is your essential tool for precision fuel mixing, designed for performance enthusiasts and flex-fuel vehicle owners.

KEY FEATURES:
- Calculate exact amounts of E85 and gasoline needed
- Target specific ethanol percentages (E30, E50, E70, E85)
- Calculate by desired octane rating
- Support for both metric (liters) and imperial (gallons) units
- Real-time calculations with instant updates
- Easy and advanced modes for different user needs

EASY MODE:
- Quick presets for common ethanol targets
- Simple tank size selection
- Intuitive slider controls for current fuel level
- Basic inputs for everyday use

ADVANCED MODE:
- Precise control over fuel properties
- Custom octane ratings input
- Detailed ethanol content adjustment
- Advanced fuel mixing calculations

Perfect for:
- Flex-fuel vehicle owners
- Performance car enthusiasts
- Race car tuners
- Anyone mixing E85 with regular gas

Get accurate calculations every time and achieve the perfect fuel blend for your vehicle's needs. Whether you're targeting a specific ethanol percentage or octane rating, E85 Calculator provides the precise measurements you need.

Safe, simple, and accurate - take the guesswork out of fuel mixing with E85 Calculator.

## E85 Calculator Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/20/71/72/2071729a-2171-9f04-399f-77fc1b7129b6/mzm.hzytnlvi.png/640x960.png)

## E85 Calculator Rating Breakdown in United States
- 5 stars: 0 (0%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 2 (100%)

## E85 Calculator Reviews in United States

### *---- "Math ain’t mathin’"
Extremely inaccurate.
-- dustwhyn, 2025-03-10

### *---- "Calculator Is WAYYY OFF"
Don’t use this calculator it is wayyyyy off.
-- Lurkerm2522, 2025-03-07

### *---- "Junk"
Display is poorly laid out.  Boxes are included to Calc 93 or E required to achieve proper E level.  Problem is screen content bleeds into each other.  

Look around for better free apps that actually work.
-- Dacwiz, 2022-10-09

### **--- "Needs work"
I can’t see though my tank and measure how many gallons are remaining in my tank. Needs to be simplified to tell me how many gallons I need to add to my tank to get desired octane.
-- VWswag, 2019-04-22

### **--- "App works great but needs a save feature"
A year ago the developer said there was an update coming out to save custom settings. Still needs that update. For a paid app there should be support.
-- 7angofragger, 2019-01-04

### ***-- "Needs save certain fields."
You said it was coming almost a year ago. Thanks.
-- Markg93, 2018-03-27

### ***** "Love the app. Just wish one thing."
Terrific app!!! 

Only wish there was a "save custom settings" feature, so those of us with custom tunes can save the percentage of Ethanol we run. 

Fyi. Arizona only has E54 now. I'd like to set that at default as well as my tank size and desired E%, when I mix.
-- N6647, 2017-03-26

### ***** "Spot on"
Not going to lie it took a bit to get use to but once u get it down it's a life saver for people who have a fuel percentage slot on their car/tuner. Cross checked it with some other online e85 calculators and it's pot on 👌
-- One star One star, 2016-08-10

### **--- "Pretty good but.."
2/2/16 Update: has a bug that makes the app display 9% more ethanol mix than desired goal 

Needs 2 things

1) to save input data in memory. 

2) to fix bug where octane is affected by changing ethanol % and requires gas octane to be ready entered to reset. 

Also,  needs to calculate the octane based on the e85 pumps octane (via input) and not just the octane of e85(105). 

Ex.  it needs to compensate for the total change away from e85,  if I input the station only gives out e81 at their station (most in ca do 81.5%) but don't know the octane at that pump. Then the octane should be 18.5% lower based on the concentration as well as the e10 in the gas and octane used in the gas
-- KornShaDoW097, 2016-03-02

### ***-- "Decent, but one flaw"
Used this a few times. It works, but absolutely hate that I have to refill information every time I load this app. It does not save previously saved info. For example, tank size or desired E% rating.
-- former Mafia Live lover, 2015-12-28

[View all E85 Calculator reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)



## E85 Calculator Discovered Keywords
- e85 calculator
- e85 mix
- ethanol
- e85
- e85 gas
- flexfuel e85
- flex fuel

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## E85 Calculator Available In
- [United States](https://apptail.io/app/e85-calculator-Wlke/united-states)
- [Canada](https://apptail.io/app/e85-calculator-Wlke/canada)
- [Belgium](https://apptail.io/app/e85-calculator-Wlke/belgium)
- [Belarus](https://apptail.io/app/e85-calculator-Wlke/belarus)
- [China](https://apptail.io/app/e85-calculator-Wlke/china)
- [France](https://apptail.io/app/e85-calculator-Wlke/france)
- [South Korea](https://apptail.io/app/e85-calculator-Wlke/south-korea)
- [Kuwait](https://apptail.io/app/e85-calculator-Wlke/kuwait)
- [Kazakhstan](https://apptail.io/app/e85-calculator-Wlke/kazakhstan)
- [Norway](https://apptail.io/app/e85-calculator-Wlke/norway)
- [Russia](https://apptail.io/app/e85-calculator-Wlke/russia)
- [Saudi Arabia](https://apptail.io/app/e85-calculator-Wlke/saudi-arabia)
- [Sweden](https://apptail.io/app/e85-calculator-Wlke/sweden)
- [Singapore](https://apptail.io/app/e85-calculator-Wlke/singapore)
- [Thailand](https://apptail.io/app/e85-calculator-Wlke/thailand)
- [Türkiye](https://apptail.io/app/e85-calculator-Wlke/turkey)
- [Taiwan](https://apptail.io/app/e85-calculator-Wlke/taiwan)
- [United Arab Emirates](https://apptail.io/app/e85-calculator-Wlke/united-arab-emirates)
- [Vietnam](https://apptail.io/app/e85-calculator-Wlke/vietnam)
- [Australia](https://apptail.io/app/e85-calculator-Wlke/australia)

---

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