# Ethanol Calculator - E85 Fuel — Flex Fuel Mix & Blend Guide

> Flex Fuel Mix & Blend Guide (iPhone/iPad app by Mursel OSMANOGLU.)

- Source: https://appshunter.io/ios/app/ethanol-calculator-e85-fuel/id6757930343 (this page in markdown: same URL + `.md`)
- Developer: [Mursel OSMANOGLU](https://appshunter.io/developer/1869685490)
- Category: Utilities
- Price: $9.99
- Age rating: 17+
- Requires: iOS 16.0 · 9 MB
- Languages: American English, Arabic, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek, Hebrew and 20 more
- Released: 2026-01-19
- Data updated: 2026-08-24
- User reviews in markdown: https://appshunter.io/ios/app/ethanol-calculator-e85-fuel/id6757930343/reviews.md

## What is Ethanol Calculator?

Ethanol Calculator helps you determine exactly how much pure ethanol to add to your fuel tank to reach your desired ethanol ratio.

KEY FEATURES:
- Calculate required ethanol amount instantly
- Preset buttons for E10, E20, E25, E50, E85
- Extra fuel mixing calculator
- Real-time results as you adjust sliders
- Dark & Light mode support
- Available in 30 languages

PERFECT FOR:
- Flex fuel vehicle owners
- E85 enthusiasts & tuners
- Race fuel blending
- Biofuel mixing calculations

Simply enter your current fuel amount, current ethanol percentage, and target ethanol percentage. The app instantly calculates how much pure ethanol you need to add.

The extra settings feature lets you factor in additional fuel purchases and their ethanol content for precise mixing calculations.

Note: Calculations are based on mathematical formulas using 100% pure ethanol as reference.

## Chart rankings

- #150 in Top Paid · Utilities (US App Store)


## Version history (last 5 releases)

### 1.5 — 2026-04-02

Now available in 30 languages! New push notification support for fuel updates and tips. Performance improvements and bug fixes.

### 1.4 — 2026-02-07

• Extra config added

### v1.3 — 2026-02-05

• Push notification support added                                             
• Notification history feature added                                          
• Performance improvements

### 1.2 — 2026-02-04

• Push notification support added                                             
• Notification history feature added                                          
• Performance improvements

### 1.1 — 2026-02-04

• Push notification support added                                             
• Notification history feature added                                          
• Performance improvements

## More apps by Mursel OSMANOGLU

- [TrackTimer: Acceleration Test](https://appshunter.io/ios/app/tracktimer-acceleration-test/id6759579375)

All apps by Mursel OSMANOGLU: https://appshunter.io/developer/1869685490

## Related topics

[ethanol calculator](https://appshunter.io/ios/topics/ethanol-calculator) · [spool ethanol analyzer](https://appshunter.io/ios/topics/spool-ethanol-analyzer) · [e85cal](https://appshunter.io/ios/topics/e85cal) · [ethanol free gas](https://appshunter.io/ios/topics/ethanol-free-gas)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*