According to the report by Google and Bain & Co, the Internet would thus influence one-third of the total sales in the FMCG sector in the next five years, it said.
The influence will be maximum for categories like male grooming, infant care products and beauty products, it added.
Google India Industry Director Vikas Agnihotri said: "It is clear that FMCG companies in India need to start thinking of digital as a more strategic medium and chart out a digital growth path for their products."
"Most FMCG companies in India have underestimated the impact of Internet and are struggling to ascertain a clear digital roadmap for their products. Companies need to uncover the digital potential for different categories, and align their growth trajectory with the changing consumer behaviour," Bain & Co. Partner Nikhil Prasad Ojha said.
For male grooming products, 25-30 per cent purchases will happen online, 20-25 per cent for infant care products and around 8-10 per cent of all beauty products will be bought online by 2020, as per the projections.