Best E85 Mix Ethanol Calculator Apps

197+ iOS apps curated and reviewed

4.2 avg rating
18 free apps
Updated May 2026

e85Cal is the household name in e85 mix ethanol calculator, but it's far from the only option. We track 197+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top E85 Mix Ethanol Calculator Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1e85Cale85CalFree4.7★ (35)NoNoJul 2026
2RaceToolsRaceToolsFree4.9★ (86)NoNoSep 2026
3Fuel-It! ECAFuel-It! ECAFree3.2★ (32)NoNoAug 2026
4E85 Stations USAE85 Stations USAFree4.7★ (2.1K)YesYesSep 2026
5Spool Ethanol AnalyzerSpool Ethanol AnalyzerFree4.1★ (14)NoNoMay 2026
6Pearson Fuels - E85 StationsPearson Fuels - E85 StationsFree4.7★ (132)NoNoJul 2026
7Hampton E85 Mix CalculatorHampton E85 Mix Calculator$2.995.0★ (3)NoNoAug 2026
8E85 AppE85 AppFree3.9★ (30)YesYesSep 2026

Top Picks for E85 Mix 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.

Fuel-It! ECA#3

Fuel-It! ECA by Dmac Mobile Developments, LLC

Worth Considering
🔧 Utilities
3.1(33 ratings)
Free
Fuel-It! ECA screenshot 1
Fuel-It! ECA screenshot 2
Fuel-It! ECA screenshot 3

Monitor your vehicle's ethanol concentration and fuel temperature in real-time. This app wirelessly connects to a compatible Bluetooth module, freeing up your device's port for simultaneous charging and monitoring. It includes an ethanol fill-up concentration calculator and customizable display views.

More E85 Mix Ethanol Calculator apps to explore

FAQ about E85 Mix Ethanol Calculator

What are the best e85 mix ethanol calculator apps for iPhone?
e85Cal tops our e85 mix ethanol calculator apps ranking as of May 2026, with a 4.7-star average from 35 App Store ratings, and it's free to download.
Yes — 18 of the top e85 mix 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 May 2026.
We track 197+ e85 mix ethanol calculator apps on the iOS App Store as of May 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.