He attended Saint Josephs College in Colombo 10 and studied at Asian international School in Colombo 5.
He played the main part of several commercial successes such as Tharaka Mal (2007), Asai Mang Piyabanna (2007), Rosa Kale (2008), Feel My Love (2008), Dancing Star (2009) and Suwanda Danuna Jeewithe (2010). His debut film was Hiripoda Wassa with Anarkalli Aakarsha Jayatilaka, Chathurika Peiris, Pubudu Chathuranga, and Janith Wickramage which was directed by the Udayakantha Warnasuriya. His second and third films Tharaka Mal and Asai Mang Piyabanna released in 2007.
Ranawana became a sensation in the Sri Lankan film industry and a household name after the success of Hiripoda Wassa (2006) and Asai Manitoba Piyambanna with south Indian actress Pooja Umashankar (2007).
This earned him the role of broadband ambassador for SLT (Sri Lanka Telecom). He participated in Sirasa Dancing Stars season 1 and got the third place.
Modelling Ranawana was awarded the title "Mr. Sri Lanka". Ranawana participated in the Mr.
World, United Kingdom and Grassim International, United Kingdom in 2003.
He was the second runner-up of Best Model of the World, a competition held in the same year in Turkey. In addition, he appeared in his own music video "Neela Neth" with Steven Krishan in 2010.