Hansika was born on August 9, 1991 in the Sindhi speaking Motwani family in Bombay, India. Her dad, Pradeep, is a businessman, while her mom, Mona, is a Dermatologist. She has an elder brother, Prashant. She is a student in Podar Internation School. Her parents divorced during 2004, while she continues to live in Andheri, Bombay, India, with her mom.
She speaks Hindi and Tulu fluently. She is involved in physical fitness and diet with Mickey Mehta. At the age of 16 she has three staff persons, as well as her mom, to manage her career.Hansika began her television career with a serial called Shaka Laka Boom Boom. She later acted in the Indian serial Des Mein Niklla Hoga Chand, for which she received the Favorite Child Award at the Star Parivaar Awards, and appeared as one of the children in Koi Mil Gaya with Preity Zinta and Hrithik Roshan.
In 2015, her movie Romeo Juliet with Jayam Ravi,Poonam Bajwa, VTV Ganesh, Vamsi Krishna, Uma Padmanabhan and Arya (Cameo Role) directed by Lakshman released on 12 June 2015.
Hansika is involved in many philanthropic activities. She provides monetary support for the education of 25 underprivileged children and also takes care of the medical needs of 10 women affected with breast cancer. She is the brand Ambassador of an awareness program to create breast cancer awareness among urban women.Hansika has a devout fan base who has built a temple for her in Madurai, Tamil Nadu which became operational from January, 2013.