🤰Calculators
Pregnancy Calculator
Compute estimated due date (EDD), gestational age and trimester from the last menstrual period (LMP).
- Estimated due date
- Gestational age
- Trimester
How is it computed?
EDD is estimated by Naegele's rule: LMP + 280 days (40 weeks), adjusted if the cycle is longer or shorter than 28 days.
Gestational age is the time since LMP in weeks and days. Trimester: 1st up to 13 weeks, 2nd 14-27 weeks, 3rd 28+ weeks.
Statistical estimate. Only medical exams confirm precise gestational age.
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