Is it possible to convert between Torah measurements?
Specifically, T'fachim & Amot, (cubits) so I can figure out the size of the luchot (tablets) within the Aron Hakodesh (ark). (The Luchot are 6x6x3 t'fachim each [6 t'fachim cubed together] & the ark is 1.5 x 2.5x 1.5 cubits)
There are two types of Amos: 5 tefach amos, 6 tefach amos. There are also "Sad" and "Happy" (if the tefach is with fingers stuck together or a bit loose) which are different by 1/2 finger.
Nowadays, calculating biblical sizes has such a wide margin of error (in addition to the "niskatnu habeitzim" debate), that most numbers that are given for tfachim/ammah are rounded lchumra. According to R' A"H Naeh, a tefach is 8cm.