How to convert Units

This method works with HP49G MODE set RPN
Press [MODE] and [+ / -] if it needs be changed.

Entering unit to convert Lets convert 142.5 Mph to kph Type 142.5 in level 1 and Press [ENTER] Press [UNITS] and go to menu SPEED Choose Mph and press the softkey [OK] It will appears a tagged number Entering base unit to convert Type 1 and press [ENTER] Other time press [UNITS] and go to menu SPEED Choose kph and press the softkey [OK] Press [UNITS], go to menu TOOLS and press the softkey [OK] Choose CONVERT and press [OK] It will show the result

There is an easier way...

Type 142.5_mph in level 2 type 1_kph in level 1 Note: it is case sensitive. You need press [ALPHA] [ALPHA] [ALPHA] [ALPHA] for smal case (HP49G default flag). Press [UNITS], go to menu CONVERT and press [OK]

And this is the easiest...

With HP49 in RPN mode Set flag -117 SF Type -117 SF  [ENTER] Press   [UNITS] Type 142.5_mph at level 1 Press and the softkey closest to kph.