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Pregnancy Due Date Calculator
Due date · Weeks pregnant · Trimester · Key milestones
❓ Frequently Asked Questions
How is due date calculated? ▾
Due date is 280 days (40 weeks) from the first day of your last menstrual period (LMP). This is the standard used by doctors worldwide.
What are the three trimesters? ▾
1st trimester: weeks 1-13. 2nd trimester: weeks 14-26. 3rd trimester: weeks 27-40. Most pregnancy discomfort eases in the 2nd trimester.
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