The 28 primary letters, in “Eastern” abjad order (right to
left, row by row):
Arabic secondary letters:
If you’re viewing this on a mobile device, you may find that
the text entry buttons are easier to work with in landscape
The main page contains much more information
about the ruleset that the program follows.
Generally speaking, use of the “secondary” and
Persian-specific letters is optional. They are provided for
convenience, but Persian pe (پ), for example, will be
treated the same as Arabic bā’ (ب);
tā’ marbūṭah (ة) is considered equivalent to
hā’ (ه); and so forth. Please refer to the
on abjad numerals, which lists (most of) the letter
values. I have also posted a
table highlighting the differences
between the Mashriqi and Maghribi systems.
You may notice that two of the buttons above are practically
indistinguishable. One of them is for Arabic
(ى), the other for Persian ye (ی). Trust me, they’re
different characters! Both will receive the same
abjad value as Arabic yā’ (ي), in any case.