Suppasit was born on 21 February 1991. He graduated secondary school from Kasetsart University Laboratory School.
For his Bachelor's degree, Suppasit studied at Kasetsart University, majoring in industrial engineering where he graduated with First-Class Honors (Gold medal). He continued to pursue his Master's degree in industrial engineering at Chulalongkorn University where he also served as a Teaching Assistant in statistics under the university's Faculty of Engineering. Currently, he is studying for his PhD degree in industrial engineering at Chulalongkorn University.
Suppasit initially started out in the entertainment industry by appearing in various commercial advertisements and music videos. He was also cast in the Thai version of the Australian mock-dating reality show Taken Out, Take Me Out Thailand and its spin-off show Take Me Out Reality. Suppasit then began his acting career in the Thai boys' love (BL) series I Am Your King in 2017. The following year, he was cast in his first main role in the BL series, What The Duck: The Series (2018), as "Pree". Due to the series' popularity, it was confirmed that a second season would start filming. What The Duck 2: The Final Call, premiered on March 18, 2019, on LINE TV.

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