How numerology compatibility works
Numerologists compare two people by their life path numbers, the number each full date of birth reduces to. Numbers that share a rhythm are read as natural matches: the talkers (3, 5) with each other, the builders (4, 8) with each other, the carers (2, 6) with each other. Numbers that want different things are read as demanding: a 1 who leads and an 8 who also leads, a 4 who plans and a 5 who leaves. Everything else is workable, which is most pairs.
Master numbers are read on their base for this purpose (11 as 2, 22 as 4, 33 as 6), with the note that the master-number partner tends to feel the relationship more intensely. The calculator works both numbers out from two dates and sends you to the right pair.
The full compatibility table
N is a natural match, W is workable, D is demanding. Read across from your number to your partner's. The master numbers follow their base row.