Best Ethanol Calculator Apps

248+ iOS apps curated and reviewed

3.9 avg rating
15 free apps
Updated September 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 (September 2026)

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

FAQ about Ethanol Calculator

What are the best ethanol calculator apps for iPhone?
e85Cal tops our ethanol calculator apps ranking as of September 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 September 2026.
We track 248+ ethanol calculator apps on the iOS App Store as of September 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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