Pregnancy Due Date Calculator
Estimate your due date and current pregnancy week from the first day of your last menstrual period.
Estimated due date
March 20, 2027
Weeks pregnant
0 weeks, 0 days
Trimester
First trimester
Days until due date
279 days
How it works
Standard estimate: LMP + 280 days (40 weeks). Only about 5% of babies arrive on the exact due date.
Always confirm dating with your healthcare provider, especially if cycles are irregular.
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