# Hampton E85 Mix Calculator — Calculate your mix on the go!

> Calculate E85 and pump gas mixes for target ethanol blends and octane ratings. (iPhone/iPad app by Daniel Hampton.)

- Source: https://appshunter.io/ios/app/hampton-e85-mix-calculator/id1529634776 (this page in markdown: same URL + `.md`)
- Developer: [Daniel Hampton](https://appshunter.io/developer/1587337125)
- Category: Productivity, Lifestyle
- Price: $2.99
- Rating: 5.00/5 from 3 App Store ratings
- Age rating: 4+
- Requires: iOS 16.6 · 6 MB
- Languages: American English
- Released: 2020-09-10
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hampton-e85-mix-calculator/id1529634776/reviews.md

## What is Hampton E85 Mix Calculator?

Stop guessing at the pump. The Hampton E85 Calculator gives you the exact gallons of E85 and pump gas to add for any target ethanol blend — from E30 to E85.

Enter your tank size, current fuel level, and target mix
Get precise fill amounts instantly
See your estimated octane rating
Works offline, no signal needed at the pump
Fuel level helper estimates your tank from miles-to-empty
Adjustable ethanol and octane defaults for your region
Built by Hampton Tuning and real-world tested by enthusiasts. Whether you're on a flex fuel tune or dialing in a specific blend, this is the only tool you need at the pump.

## Key features

- Calculate exact E85 and pump gas amounts
- Estimate current fuel level
- View estimated octane rating
- Offline functionality
- Adjustable ethanol and octane defaults
- Real-world tested by enthusiasts

## Chart rankings

- #188 in Top Paid · Productivity (US App Store)


## Frequently asked questions about Hampton E85 Mix Calculator

### How does Hampton E85 Mix Calculator work?

Hampton E85 Mix Calculator allows you to input your tank size, current fuel level, and desired ethanol blend. It then provides the exact gallons of E85 and pump gas to add, along with an estimated octane rating.

### Can I use Hampton E85 Mix Calculator without an internet connection?

Yes, Hampton E85 Mix Calculator works offline, meaning you do not need a signal at the pump to calculate your fuel mix.

### What is the price of Hampton E85 Mix Calculator?

Hampton E85 Mix Calculator is a paid app, available for $2.99. It does not feature in-app purchases or advertisements.

### What devices does Hampton E85 Mix Calculator support?

Currently, Hampton E85 Mix Calculator is supported on iPhone devices.

### How often is Hampton E85 Mix Calculator updated?

The app was last updated on March 22, 2026, with version 2.2. This indicates a history of updates, though specific frequency is not detailed.

### What is the age rating for Hampton E85 Mix Calculator?

Hampton E85 Mix Calculator has an age rating of 4+, making it suitable for a wide range of users.

### Does Hampton E85 Mix Calculator have ads?

No, Hampton E85 Mix Calculator does not contain advertisements. It is a paid application designed without ads.

### What makes Hampton E85 Mix Calculator useful for enthusiasts?

It is built by Hampton Tuning and real-world tested by enthusiasts, offering precise calculations for flex fuel tunes or specific blend dialing, making it a reliable tool at the pump.

## Version history (last 5 releases)

### 2.2 — 2026-03-22

Added instructions, details "info button".

### 2.1.1 — 2026-02-15

Added scroll option for smaller devices.
Option to calculate fuel level with miles left and average mpg.

### 2.0 — 2026-02-11

What’s New:

Stability improvements 
New startup splash screen 
Cleaner, more polished user interface
Improved calculation reliability and stability

### 1.3.2 — 2020-10-19

Bug Fixes
iOS Compatibility

### 1.2 — 2020-10-15

Bug fixes and Functionality update to run smoothly with iOS 14.1
Screen Mode Optimization

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## More apps by Daniel Hampton

- [ServiceLog Pro](https://appshunter.io/ios/app/servicelog-pro/id6760973388)

All apps by Daniel Hampton: https://appshunter.io/developer/1587337125

## Related topics

[hampton e85 mix calculator](https://appshunter.io/ios/topics/hampton-e85-mix-calculator) · [e85 mix calculator](https://appshunter.io/ios/topics/e85-mix-calculator) · [e85 calculator](https://appshunter.io/ios/topics/e85-calculator) · [e85 mix ethanol calculator](https://appshunter.io/ios/topics/e85-mix-ethanol-calculator)

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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.*