What season should I watch Naruto till, 5 or 9? I just started watching Naruto on Netflix and it shows there are 9 seasons, but people say that there are only 5 though.
Should I only watch season 1-5 then go on to Naruto Shippuden?
The confusion is possibly caused by non-standardized use of season numbering.
The Naruto anime consists of 220 episodes.
In Japan, the anime is divided into 5 seasons:

Season 1: 57 episodes
Season 2: 43 episodes
Season 3: 41 episodes
Season 4: 42 episodes
Season 5: 37 episodes

On the other hand, Netflix seems dividing each season into 26 episodes, resulting in a total of 9 seasons. This is the same as the series numbering used by UK's DVD Box, Naruto Unleashed.
So, all-in-all, both are possibly referring to the whole 220 episodes.

Though, perhaps coincidentally, Netflix's Season 5 ends on episode 130. As per Can I start watching Naruto Shippuden after Naruto Ep 135 and not miss anything? (Story wise), almost all episodes after episode 135 are considered fillers, so it might be okay to skip Season 6-9 and continue to Naruto Shippuden.