He has done schooling from St. Peter's School, Mazagaon.
He says his singing career began in school:
“ I was not even a bathroom singer. I began singing only when I was caught by my seniors as an 8th standard students in St Peters School. I was passing by them whistling a tune when a few of them caught hold of me and commanded, 'Sing a song'. I was shocked. I said I never sang in my life. They said, "Dont lie!". When he can whistle tunes so well, why can't he sing?' They caught hold of my neck saying, they would throttle me if I didn't. With great difficulty I sang Nazar ke samne (Aashiqui) and Ek din bik jayega (Dharam Karam). They spared me then but made me sing in college festivals later. ”
In 2005, he married fellow singer Gayatri Iyer.
Kunal entered the Kannada film industry in 2005 with the song Neene neene from Akash which was a huge hit and since then he has become one of the most popular Kannada film song singer.