Kadvai is a village in Sangameshwar tehsil in district of Ratnagiri, Maharashtra, India. As per the data provided by Census of India in 2011, total population of Kadvai was 5,008 which includes 2,398 males and 2,610 females. Kadvai covers 1475.13 ha area. Pincode of Kadvai is N/A.