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To start off, I am a new Mooney owner and this is my first topic I have created. This calculator is just something I have been using and I thought others might think it was neat. If not, please feel free to not use it. Also, disclaimer, this is not intended to be a replacement for your POH. With that out of the way, my background is in military aviation and I was always used to having a “whiteboard” to calculate approach and stall speeds, etc. So when I moved over to general aviation, I wasn’t really satisfied with “just set this in climb and this in cruise”. Usually those being the same two numbers for MP and RPM. So I made this calculator based off of MY airplane’s POH. Other airplanes may be similar or exact, but it’s up to you to verify and/or edit a copy for your own use. It is sized to fit a phone screen and easy to use with drop down menus. Once I get to cruise altitude, I use this calculator while my plane is speeding up, and then I verify what settings I want based off my actual OAT and pressure altitude. The Fahrenheit to Celsius converter is just because my plane shows OAT in Fahrenheit, but my 430 TAS calculator takes Celsius. I recently added the “approximate TAS” section and it has been within a few knots when tested on real flights. Anyway, this is more useful to me as an app on my phone than trying to read spaghetti charts in turbulence or just plugging in memorized, generic numbers. But do what works for you. Mooney M20J Cruise.xlsx