Best Ethanol Calculator Apps

248+ iOS apps curated and reviewed

3.8 avg rating
15 free apps
Updated August 2026

e85Cal is the household name in ethanol calculator, but it's far from the only option. We track 248+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Ethanol Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1e85Cale85CalFree4.7★ (35)NoNoJul 2026
2RaceToolsRaceToolsFree4.9★ (86)NoNoJul 2026
3Ethanol Calculator - E85 FuelEthanol Calculator - E85 Fuel$9.99NoNoJul 2026
4E85 CalculatorE85 CalculatorFree was $1.991.0★ (2)NoNoMay 2026
5Spool Ethanol AnalyzerSpool Ethanol AnalyzerFree4.1★ (14)NoNoMay 2026
6E85 Mix Ethanol CalculatorE85 Mix Ethanol Calculator$1.993.1★ (7)NoNoAug 2026
7Brewing CalculatorBrewing CalculatorFreeNoNoMay 2026
8Beverage360Beverage360FreeNoNoMay 2026

Top Picks for Ethanol Calculator

e85Cal#1

e85Cal by Michael Joe

Editor's Choice
🔧 Utilities
4.7(35 ratings)
Free
e85Cal screenshot 1
e85Cal screenshot 2

This app assists users in calculating the precise amounts of standard and ethanol gasoline needed to achieve a desired ethanol percentage in their fuel mix. It simplifies the process by taking into account tank size, current fuel level, and the ethanol content of available fuel types.

RaceTools#2

RaceTools by MirzaWorks LLC

Strong Contender
🗺️ Navigation
4.9(86 ratings)
FreeIn-App Purchases
RaceTools screenshot 1
RaceTools screenshot 2
RaceTools screenshot 3
RaceTools screenshot 4

This app provides a suite of automotive tools for car enthusiasts. It includes calculators for ethanol blends and tire sizes, a tracker for car modifications, and a locator for E85 fuel stations. Optional CarPlay support keeps essential tools accessible on the road.

More Ethanol Calculator apps to explore

4
E85 Calculator
E85 Calculator
E85 Calculator
by Sheharyar Irfan
Free
$1.99 | 100% OFF

This application helps performance enthusiasts and flex-fuel vehicle owners precisely calculate the amounts of E85 and gasoline needed for specific ethanol percentages or octane ratings. It offers both simple and advanced modes for fuel mixing calculations, supporting metric and imperial units.

Calculate E85 and gasoline amountsTarget specific ethanol percentagesCalculate by desired octane rating
🔧 Utilities
(2)
free
5
Spool Ethanol Analyzer
Spool Ethanol Analyzer
Spool Ethanol Analyzer
Includes Mixing Calculator
Free

This application connects to a wireless sensor kit to measure in-tank ethanol content and fuel temperature. It also features a mixing ratio calculator that can be used independently of the sensor hardware.

Connects to Spool Wireless Ethanol Sensor KitMeasures in-tank ethanol contentMeasures fuel temperature
🔧 Utilities
(14)
free
6
E85 Mix Ethanol Calculator
E85 Mix Ethanol Calculator
E85 Mix Ethanol Calculator
Ethanol mixture calculator
$1.99

Quickly calculate the precise amounts of E85 and gasoline needed to achieve your desired ethanol fuel mix. The app remembers your tank details for even faster calculations.

Calculates E85 and gasoline amountsRemembers tank capacity and target mixSpecifies current ethanol content
🔧 Utilities
(7)
paid
7
Brewing Calculator
Brewing Calculator
Brewing Calculator
Homebrew Tools
Free
🍔 Food & Drink
(0)
8
Beverage360
Beverage360
Beverage360
Calculator for Craft Beverages
Free
📊 Productivity
(0)
9
ABV Calculator - Minimalistic
ABV Calculator - Minimalistic
ABV Calculator - Minimalistic
Smple, easy to use ABV-Calc
$4.99
🍔 Food & Drink
(0)
10
Refuel Cost Calculator
Refuel Cost Calculator
Refuel Cost Calculator
Save more when refueling
Free
🔧 Utilities
(0)
11
85Blends
85Blends
85Blends
E85 Blend Calculator
Free
🔧 Utilities
(0)
12
Caymus Tank Calculator
Caymus Tank Calculator
Caymus Tank Calculator
calculadora de tanques
Free
$6.99 | 100% OFF
💼 Business
(0)
13
Oilfield Calculator Pro
Oilfield Calculator Pro
Oilfield Calculator Pro
by Ahmad Suleiman
$9.99
🔧 Utilities
(0)
14
Calculator - Calc
Calculator - Calc
Calculator - Calc
Calculator
Free
📚 Education
(0)
15
Fuel Calc: Cost Calculator
Fuel Calc: Cost Calculator
Fuel Calc: Cost Calculator
Calculate Gas Money in Seconds
Free
🌟 Lifestyle
(0)
16
Calculator ∞
Calculator ∞
Calculator ∞
The Best Scientific Calculator
$5.99

This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.

Step-by-step solution hintsMath Photos SolverHandwriting Recognition
📚 Education
(6.3K)
free with in-app purchases
17
Distillers Calculator
Distillers Calculator
Distillers Calculator
Basic distillation calculators
Free
🔍 Reference
(0)
18
Low Fuel Calculator for ACC
Low Fuel Calculator for ACC
Low Fuel Calculator for ACC
For Assetto Corsa Competizione
Free
🔧 Utilities
(0)
19
Calculator Buddy
Calculator Buddy
Calculator Buddy
Your Math Companion
Free

This free utility app offers a comprehensive suite of calculating tools, including standard, scientific, and unit conversion functions. It features a smart workflow with history and favorites, along with a customizable interface. Designed with privacy in mind, it operates offline with no ads or tracking.

All-in-one calculator (standard, scientific)Extensive unit converterCalculation history and favorites
🔧 Utilities
(0)
free
20
How much alcohol to drink?
How much alcohol to drink?
How much alcohol to drink?
Alcohol calculator
Free
🎬 Entertainment
(0)

FAQ about Ethanol Calculator

What are the best ethanol calculator apps for iPhone?
e85Cal tops our ethanol calculator apps ranking as of August 2026, with a 4.7-star average from 35 App Store ratings, and it's free to download.
Yes — 15 of the top ethanol calculator apps we rank are free to download, including e85Cal and RaceTools.
e85Cal has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 248+ ethanol calculator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
e85Cal guides you through entering your gas tank size, the ethanol percentage in standard and ethanol pump gas, your target ethanol mix, and your current fuel level. It then provides the exact gallons or liters of each fuel type to add.
You will need to know your vehicle's gas tank size, the ethanol percentage of the regular and high-ethanol gas you have access to, your desired final ethanol percentage, and your current fuel level percentage.

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