Chatchai was born in Kanchanaburi Province. Having a police officer as a father meant that the family relocated around Thailand constantly throughout his childhood. He attended a prestigious boarding school in Nakhon Pathom (King's College), where he found his passion for rugby.
He met his wife, Sinjai Plengpanich, on a movie set, in which they played the lead characters. They had many chance encounters during the next four years and decided to date each other. A year later, they decided to get married. They have three children.
Shares the same nickname with wife. Both are called Nok (translated as bird in English)
Has been credited on many sites as a voice actor in the film "Over the Hedge", for an unnamed character. Despite this, he is not listed under any position in the official credits, nor is his voice recognized anywhere in the film. Why he is being referenced to the film is unknown at this time.