❤️ Health
Pregnancy Due Date Calculator
Estimate your baby's due date and see your current pregnancy week and trimester.
days
⚕️ This calculator provides an estimate only. Only a healthcare provider can confirm your due date, typically with an early ultrasound. Due dates are always approximate — only about 5% of babies are born on their exact due date.
How due dates are calculated
The standard method (Naegele's rule) adds 280 days (40 weeks) to the first day of your last menstrual period:
EDD = LMP + 280 days
(adjusted for cycle length if not 28 days)
(adjusted for cycle length if not 28 days)
A full-term pregnancy runs 37–42 weeks. Babies born between weeks 39–40 are considered "full term"; 37–38 weeks is "early term"; 41+ weeks is "late term".