Marriage is a socially recognized institution that regulates family life, reproduction, inheritance, and social responsibilities. The suitable age of marriage is an important factor in ensuring the physical, emotional, educational, and economic well-being of individuals and contributes significantly to sustainable development. In most societies, the appropriate age of marriage is considered to be the stage at which individuals attain physical maturity, emotional stability, educational preparedness, and financial independence. Early marriage often results in health complications, interruption of education, poverty, and gender inequality, while marriage at a mature age promotes healthier families and responsible parenthood. From a legal perspective, countries establish minimum marriage ages to protect children from exploitation and to ensure informed consent. In India, the legal age of marriage is 21 years for men and 18 years for women, although there have been discussions on raising the minimum age for women to ensure greater gender equality and educational opportunities. International organizations such as the United Nations and UNICEF advocate ending child marriage because it violates human rights and hinders sustainable development goals related to health, education, and gender equality. The suitable age of marriage is influenced by biological, psychological, social, and economic factors. Physically mature individuals are better prepared for parenthood, reducing maternal and infant mortality rates. Psychological maturity enables couples to make responsible decisions, resolve conflicts, and maintain stable relationships. Educational attainment