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A due date calculator uses your last menstrual period (LMP) to predict when your baby will be born. The standard method (Naegele's Rule) adds 280 days (40 weeks) to the LMP. Due dates are estimates — only 4% of babies arrive on the exact predicted date.
Przewodnik krok po kroku
- 1Record the first day of your last menstrual period
- 2Add 280 days (or 9 months and 7 days) to get your due date
- 3Key milestones: conception ~day 14, heartbeat ~week 6, anatomy scan ~week 20
- 4Full term: 37–40 weeks; induced if past 41–42 weeks
Rozwiązane przykłady
Wejście
LMP: March 1
Wynik
Due date: December 6
Add 280 days
Wejście
LMP: July 15
Wynik
Due date: April 21 (next year)
Full 40-week calculation