How many tails did Naruto get during his fight with Pain? During Pain's destruction of Konoha, he fought Naruto. When fighting Naruto, Pain hurt Hinata which made Naruto get mad. After a couple of seconds of being mad Naruto started to transform into Kyuubi.

How many tails did he transform to? I've heard and seen people say that he only got six tails, but I always thought he got all nine of them. Or almost got nine, until his dad stopped the transformation.
We see Naruto reaching six tails and fighting Pain, that much is certain.
The wiki claims that after that, we see eight tails, here:


And we later on see Yamato's hand with the number nine, to which he says he was too late.
However, due to Minato's interference, we do not see Naruto with nine tails.

So, yes, Naruto has gone onto nine tails (He in fact wanted to remove the seal), but we do not see it, and Minato stops it very quickly.