Pressure altitude is the height above a standard datum plane (29.92 inHg at sea level), used to calculate aircraft performance in non-standard atmospheric conditions. It's calculated using the formula ...

True altitude is height above mean sea level (MSL), crucial for situational awareness and safe flight operations. True altitude calculation involves indicated altitude and temperature; colder ...

Is there a plug and chug way to do it if I know my barometric pressure, temp, and altitude? I need to get it everyday before I have a flying lesson. I hate using that round slide-rule flight computer ...