iPhone Screenshots


EngineCalc is a collection of useful formulas (calculators) for those involved with powersports or engine tuning, in general.

Instead of carrying around a laptop or relying on access to a desktop computer with a spreadsheet, you can get the calculations you need right on the handy iPhone in your pocket.

Here is a partial list of the "calculators" provided here in EngineCalc:

* Actual Volume Flow
* Air Density
* BHP Loss
* Compression Height
* Compression Ratio
* Corrected BHP
* Cylinder Displacement
* Horsepower
* Mass Flow
* Piston Dome Volume
* Piston Speed
* Rod Length
* Simple Horsepower
* Theoretical Volume Flow
* Torque
* Volumetric Efficiency

What’s New

Version 1.5.1

Two exciting new updates this time. First, all the centimeter labels and calculations have been changed to millimeters. A special "thank you" to our friends in the UK for that one.

Second, values that have been typed in or calculated are now carried over into other calculators, thus saving you time and minimizing errors.

This is just the beginning! We have an even more exciting feature in the works. Keep those ideas and suggestions coming. We don't want our developers to get bored!

Ratings and Reviews

2.3 out of 5
3 Ratings

3 Ratings

Braden S. ,

Keeps Crashing

I tap on various parameters to fill them in and it just keeps crashing. So hasn't proved usable. Also there doesn't seem to be any way to save or share the information so once you leave the app you lose your work. Annoying. iPhone 6s.

Fish_763 ,

Needs to be updated

This could be a really good app. It is laid out very well easy to use and switches between Eng/Metric without loosing data.

Biggest issue is the app crashes when entering data as you move around the app. Then you are always starting over, I was never able to test the power calculations to see how accurate they are. Disappointed to say the least.

I will be looking for updates, hopefully soon.

This was test on IOS 12.4.1 September 2019

Chumma7 ,

Great but easily could be better

Love this ap in terms of concept and ease of use. It's an engine designers dream to have this in their hands. I only wish there was a way to work with metric units. Inches seem to be the only option.


iTrinity, Inc.
8.3 MB

Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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