Is there a website that lists compatibility for every possible parent for any generation?

I am trying to breed my Kangaskhan with male Slowpoke but the daycare guy says they dont seem to like eachother but they are both in Monster group. If I level up my slowpoke to Slowbro, will they like eachother better? Before I expend my time leveling up Slowpoke to Slowbro, is there an online calculation/list for this that shows the chances of egg for every possible parents, other than checking the egg group? TIA!

Pleaselog inorregisterto add a comment.

There is no website that lists out every possible breeding matchup and says whether it is compatible (or what their breeding rate is). Such a thing is highly unnecessary, as breeding compatibility and breeding rates can both be distilled down to a simple table,like this one on Bulbapedia. This table explains everything you need to know, but I will also give an explanation in this answer.

I think some terminology is being muddled in this thread, so to be absolutely clear:

The table on Bulbapedia is showing the breeding rates. The breeding rate is highest when the species is the same and the OT is different. If the Pokemon arenot compatible, then we say the breeding rate is zero.

To emphasise:if the Pokemon are compatible, then the breeding rate is always above zero, so all you need to do is walk/bike around a lot in game and the Pokemon will eventually breed. People tend not to care about the breeding rate for compatible Pokemon, because that’s always at least 20%, which is quite high.

To connect to your scenario: your Kangaskhan and Slowpoke are compatible as long as they are opposite genders. You cannot change their breeding rate because you cannot make Slowpoke and Kangaskhan have the same species and you cannot change a Pokemon’s OT. Their breeding rate depends on whether their OT is the same; use the table on Bulbapedia to see the difference this makes. As explained above, the level of the Pokemon is not a factor for the breeding rate, so levelling up Slowpoke will not affect the breeding rate.

(In Black/White 2 onward, you can boost the breeding rate with anOval Charm. In Gen 2, breeding rates are considerably lower than in other generations, and there is an extra way for Pokemon to be incompatible that depends on their IVs. Again, all of this is covered comprehensively by the tables on Bulbapedia, to where it is very pointless to list out every possible combination.)