This article proposes to measure functioning-based well-being, as proposed by Amartya Sen and others, for 28 states in India based on National Family Health Survey 3 (2005-06) data. Significant differences between states were found in terms of well-being and wealth indices. Overall, women were found to be far behind men in terms of well-being. The well-being of women was found to decline with age and when they were in larger families, unlike men. While upper-caste women were not found to be doing significantly better than Scheduled Caste and Scheduled Tribe women, upper-caste men were better off. And the women in the northern mountainous regions were found to be doing better than women in the Indo-Gangetic plains. However, the well-being of both men and women was found to be significantly related to the wealth they possessed.