Pregnancy Due Date Calculator
Estimate your baby's due date from the first day of your last period.
August 7, 2027
Estimated Due Date
Current Week: 0 weeks
Days Pregnant: 0
Trimester: First
Days Pregnant: 0
Trimester: First
How Your Due Date Is Calculated
Your estimated due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period (LMP). This is the standard Naegele's rule used by healthcare providers.
Only about 5% of babies are born on their exact due date. Most arrive within two weeks before or after.