Due Date Calculator (Naegele's Rule)
Due Date Calculator (Naegele's Rule): a planned Super Calculator tool. Covers last menstrual period date, average cycle length (days) and luteal phase length.
Due Date Calculator (Naegele’s Rule) is a planned calculator in the health section of Super Calculator, covering reproductive and pediatric.
What this calculator will compute
Inputs: last menstrual period date, average cycle length (days) and luteal phase length.
Outputs: estimated due date, gestational age today, trimester dates and milestone timeline.
Formula, recorded as scope and not yet verified against a primary source: Naegele’s rule: estimated due date = first day of the last menstrual period plus one year, minus three months, plus seven days, which is 280 days, assuming a 28-day cycle with ovulation on day 14. Cycle-length adjustment shifts the date by the difference from 28 days.
Status
This page is a stub. The calculator is not built, no figure on this page has been verified against the authority that sets it, and nothing here should be used to make a decision. The page exists so that the site structure is complete and so that articles can link this concept on first mention.
The stub carries noindex, nofollow and is excluded from the sitemap.