Best E85 Calculator Apps

224+ iOS apps curated and reviewed

4.3 avg rating
16 free apps
Updated May 2026

If you already know e85Cal, this is the deeper bench. 224+ e85 calculator apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.

Top Picks for E85 Calculator

e85Cal#1

e85Cal by Michael Joe

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

This application helps you calculate the ideal mix of ethanol and standard gas for your vehicle by taking into account your tank size, current fuel level, and desired ethanol percentage. Simply enter your vehicle's details and target ethanol mix, and the app will tell you how much of each type of gas to add.

E85 Calculator#2

E85 Calculator by Sheharyar Irfan

Strong Contender
🔧 Utilities
1.0(2 ratings)
Free
E85 Calculator screenshot 1
E85 Calculator screenshot 2

This essential tool helps performance enthusiasts and flex-fuel vehicle owners precisely mix fuel by calculating exact amounts of E85 and gasoline needed to achieve target ethanol percentages or octane ratings. With easy and advanced modes, users can get accurate calculations and achieve the perfect fuel blend for their vehicle's needs.

RaceTools#3

RaceTools by MirzaWorks LLC

Worth Considering
🗺️ Navigation
5.0(82 ratings)
FreeIn-App Purchases
RaceTools screenshot 1
RaceTools screenshot 2
RaceTools screenshot 3
RaceTools screenshot 4

This app is a must-have for car enthusiasts, offering free access to tools like an Ethanol Calculator, E85 Locator, and Tire size Calculator to help with fuel mix calculations, finding nearby E85 gas stations, and comparing tire sizes. Download the app to take advantage of these useful features and enhance your car experience.

More E85 Calculator apps to explore

4
E85 App
E85 App
E85 App
Best E85 App !!!
Free

Discover a must-have tool for car enthusiasts - an app that locates nearby E85 gas stations and features an E85 mix calculator. Get the E85 App now and level up your driving experience!

🔧 Utilities
(15)
5
E85 Stations USA
E85 Stations USA
E85 Stations USA
Locate E85 fueling stations
Free

Discover E85 fueling stations across the United States and Canada for your flex fuel vehicles. Easily locate nearby stations, get directions, and contact them. No registration needed. Powered by the National Renewable Energy Laboratory.

🗺️ Navigation
(1.7K)
6
Spool Ethanol Analyzer
Spool Ethanol Analyzer
Spool Ethanol Analyzer
Includes Mixing Calculator
Free

This application connects to a wireless ethanol sensor kit and/or a handheld analyzer to provide accurate in-tank ethanol content and fuel temperature readings on your smartphone. It also features a mixing ratio calculator that can be used independently, allowing users to easily determine and manage ethanol content.

🔧 Utilities
(14)
7
Fuel-It! ECA
Fuel-It! ECA
Fuel-It! ECA
by Dmac Mobile Developments, LLC
Free

This application provides real-time feedback from a Continental Ethanol sensor, allowing users to monitor ethanol concentration and fuel temperature wirelessly. It offers various features, including customizable display views and a fill-up concentration calculator, giving users valuable insights into their fuel data.

🔧 Utilities
(32)
8
Mix it E85
Mix it E85
Mix it E85
Calculate Correct E85 Mix
Free

Calculate the perfect E85 mix for your car with our easy-to-use tool. Choose from Metric or Imperial units and get real-time calculations with available stats, with options for a free plan or upgrade to a weekly or lifetime subscription for additional features.

🔧 Utilities
(2)
9
Hampton E85 Mix Calculator
Hampton E85 Mix Calculator
Hampton E85 Mix Calculator
Calculate your mix on the go!
$2.99
📊 Productivity
(3)
10
Sci:Pro Calculator
Sci:Pro Calculator
Sci:Pro Calculator
by Jerry Montgomery
Free

A versatile calculator app with Basic, Scientific, and Programmer modes for iPhone, iPad, and iPod Touch. Easily view history and share results via email or copy. Get precise calculations on-the-go!

🔧 Utilities
(3.6K)
11
Calculator with History Tape
Calculator with History Tape
Calculator with History Tape
No Ads Calculator with Memory
Free

Access a user-friendly calculator app with a built-in archive of your calculations for easy reference. Enjoy an ad-free experience with customizable features for seamless calculations. Try it now for straightforward and efficient math operations.

📊 Productivity
(3.2K)
12
CalcBuddy Calculator
CalcBuddy Calculator
CalcBuddy Calculator
by ApplicVision
Free

This calculator app allows for instant calculations, advanced scientific functions, and stores all your calculations for future reference, with the option to sync across devices. With various themes and shortcuts, it provides a personalized and streamlined experience, making it suitable for all kinds of calculations - try it out and discover its full potential!

🔧 Utilities
(5)
13
Calculator ∞
Calculator ∞
Calculator ∞
The Best Scientific Calculator
$5.99

A top-rated scientific calculator app on iOS devices offering advanced math functions with a user-friendly interface for users of all levels. Features include step-by-step solutions, math photo solving, and handwriting recognition. Enhance your calculations with this versatile tool.

📚 Education
(6.2K)
14
Calculator·
Calculator·
Calculator·
Big Basic Calculator
Free

A simple and intuitive calculator app with essential functions like addition, subtraction, multiplication, and more. Customize with multiple color schemes, copy results easily, and use additional functions on iPad. Experience the perfect balance of features and simplicity today!

🔧 Utilities
(33K)
15
Calculator⁻
Calculator⁻
Calculator⁻
Best hand calculator
Free

Discover the best hand calculator for all your basic math needs - addition, subtraction, multiplication, division, and more, with customizable features like recording and recalling past calculations and touch sound. Perfect for school children and anyone seeking a simple and efficient calculator solution!

🔧 Utilities
(3.4K)
16
式と履歴が見れる電卓 PanecalST Plus
式と履歴が見れる電卓 PanecalST Plus
式と履歴が見れる電卓 PanecalST Plus
Allow you to modify formulas.
$1.99

This calculator app allows you to display and modify formulas, preventing typing errors and calculation mistakes, and also enables reusing past formulas and quick navigation for editing. With a user-friendly interface, it supports various calculations, including arithmetic operations, percentages, time, and tax, making it suitable for general calculations, sales, and financial tasks.

🔧 Utilities
(271)
17
Calculator‰
Calculator‰
Calculator‰
Default Calculator
Free

Experience a beautifully designed calculator with large buttons and a clear display for quick and efficient calculations. Try it now to discover the simplicity and ease of use for your everyday arithmetic needs.

🔧 Utilities
(404K)
18
CalConvert: Pro Calculator $€
CalConvert: Pro Calculator $€
CalConvert: Pro Calculator $€
Currency Metric Unit Converter
$24.99

Download CalConvert: Pro Calculator for a versatile Currency Metric Unit Converter experience. Simplify calculations and conversions effortlessly.

💰 Finance
(295)
19
Loan Calculator‰
Loan Calculator‰
Loan Calculator‰
Simple Loan Calculator
Free

Calculate your loans or mortgages effortlessly with this simple loan calculator app. Just input the amount, term, and rate to get quick results. Try it now!

💰 Finance
(96K)
20
Calculator Easy HD
Calculator Easy HD
Calculator Easy HD
Best One-step Calculator
Free
$0.99 | 100% OFF

Experience easy and efficient calculations with this voice-operated calculator app featuring an ergonomic layout, large keys, backspace function, and usage history. Simplify your math tasks with just one step!

🔧 Utilities
(1.2K)