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Pregnancy Calculator
Calculate your due date and pregnancy week from last menstrual period.
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<script src="https://mirocalc.net/embed.js" data-mirocalc="pregnancy-calculator"></script>How to Use
Enter the first day of your last menstrual period (LMP). The calculator shows your due date and current pregnancy week.
Frequently Asked Questions
Due date = LMP + 280 days (40 weeks). This is Naegele's rule.