Pregnancy due dates are estimated using Naegele's rule — adding 280 days (40 weeks) to the first day of the last menstrual period. While only about 5% of babies arrive on the exact due date, knowing the estimate helps with prenatal appointments, planning maternity leave and tracking development by week.
Pregnancy due dates are estimated using Naegele's rule — adding 280 days (40 weeks) to the first day of the last menstrual period. While only about 5% of babies arrive on the exact due date, knowing the estimate helps with prenatal appointments, planning maternity leave and tracking development by week.
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Browse all toolsPregnancy Due Date Calculator calculations are a part of daily life for Indian households. A reliable calculator helps avoid errors, supports accurate financial decisions and ensures compliance with the latest Indian standards and tax rules.