Ethanol Calculator
3.8star
13 reviews
1K+
Downloads
Everyone
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About this app
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Ratings and reviews
3.7
12 reviews
Thomas Abney
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August 8, 2022
Why did you edit this app to limit fuel tank size to 28 gallons? I have a 36gal tank. This app is now completely USELESS. Thanks! Edit: I went to fill up and found the app auto updated and I couldn't calculate for my 36 gal tank. I was frustrated, obviously. You corrected the issues in less than 12 hours. That's impressive, thank you! And I have a Ford Raptor with an E50 tune.
6 people found this review helpful
SRD Inc.
August 21, 2022
What are you driving that has a 36 gal tank? As for why 28 gallons... Short answer is: We did a lot of refactoring of the app and removed the configurable portion for tank size. It seemed unnecessary and we had to pick a max size that seemed reasonable. The app has been updated with 36 as the max now. EDIT: Ok, a Ford Raptor on E50 should be fun!
Peter Ripley
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May 25, 2024
The app should open to the blend screen and have just current tank level, current octane level and target E-mix% (which remembers the value from the last use, as it does now). NumericUpDown controls would be better for rarely changed preference fields so they don’t get changed accidentally. Boostane/Torco calculation should perhaps be a preference that hides the related fields when off. Nice app, and professional in appearance.
SRD Inc.
June 11, 2024
Thank you for your suggestions. Will add them to the backlog.
Alex McDaniel
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June 17, 2024
Did this get an update? I thought this used to be pretty accurate. Haven't used in a long time, was in a pinch at a fill up and busted this out and it seemed very off so I consulted a handful of websites which all gave the same answers, closer to what I had in mind. Which confirms this app is no longer accurate... when I consult the mix table, the e30 blend is actually e21, e40 I'd e36, etc. It seems a scalar is off somewhere.
SRD Inc.
August 15, 2025
EDIT: Found a calculation bug. Corrected in latest version 1.4.4.
What’s new
1.4.6 UI logic improvements and bug fixes
- Increased Liters max to 200
- Corrected octane booster calculation for Liters
- Added logic to limit target mix percentage
1.4.4 UI improvements and bug fixes
- Corrected calculation bug
- Added data input validation
- Added blend line item for adding only ethanol to meet target
1.4.1 UI improvements based on user feedback.
- Increased Liters max to 200
- Corrected octane booster calculation for Liters
- Added logic to limit target mix percentage
1.4.4 UI improvements and bug fixes
- Corrected calculation bug
- Added data input validation
- Added blend line item for adding only ethanol to meet target
1.4.1 UI improvements based on user feedback.
App support
About the developer
Christopher Stokes
srdapps77@gmail.com
United States