As of 2026, five released Hindi movies are officially listed as adaptations of Chetan Bhagat’s novels: Hello, 3 Idiots, Kai Po Che!, 2 States, and Half Girlfriend. Chetan Bhagat’s own website lists these five book-to-film adaptations.
Personally, I think Chetan Bhagat is an interesting case because his books were written in a very accessible, conversational way, so many of them naturally felt adaptable for mainstream Bollywood. And in some cases, the movie became even more culturally famous than the original novel.
Complete Adaptation List
Here is the complete released adaptation list:
Chetan Bhagat novel | Movie | Release year |
|---|---|---|
One Night @ the Call Center | Hello | 2008 |
Five Point Someone | 3 Idiots | 2009 |
The 3 Mistakes of My Life | Kai Po Che! | 2013 |
2 States | 2 States | 2014 |
Half Girlfriend | Half Girlfriend | 2017 |
One clarification I would make here: Kick should not be counted. Bhagat worked on its screenplay, but the movie wasn't an adaptation of one of his novels.
Major Adaptations
3 Idiots is probably the most famous example. The movie was adapted from/inspired by Five Point Someone and became a much bigger pop-culture phenomenon than the book itself.
Kai Po Che! adapted The 3 Mistakes of My Life, while 2 States brought Bhagat's intercultural romance to screen.
Personally, 2 States feels like one of the cleaner book-to-film transitions because the basic identity of the novel remains instantly recognizable in the movie.
Same-Title Adaptations
Two major adaptations retained the book's title:
2 States → 2 States
Half Girlfriend → Half Girlfriend
The other three received different movie titles.
Five Point Someone → 3 Idiots
One Night @ the Call Center → Hello
The 3 Mistakes of My Life → Kai Po Che!
So if someone only searches for films with exactly the same titles as Bhagat's books, they can easily miss three adaptations.
Books Not Yet Adapted
Several Chetan Bhagat novels are not included on his officially released film adaptation list, including Revolution 2020, One Indian Girl, The Girl in Room 105, One Arranged Murder, 400 Days and his newer 12 Years: My Messed-up Love Story.
Revolution 2020 is particularly interesting because it came between two novels that received major Bollywood adaptations, yet it still hasn't joined the released-film list.
FAQs
How many Chetan Bhagat novels have become movies?
Five novels have released Hindi-film adaptations listed on his official website.
Is 3 Idiots based on a Chetan Bhagat novel?
Yes. It was adapted from Five Point Someone.
Is Kai Po Che! based on his book?
Yes, it is based on The 3 Mistakes of My Life.
Was Kick based on his novel?
No. Bhagat worked on the screenplay, but it wasn't adapted from his novel.
Must Read: Name any Bollywood movies that are based on friendship.