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Pregnancy Calculator
Weeks pregnant, due date and trimester from your last period.
Enter your details
Results
Weeks Pregnant
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Due Date
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Trimester
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How to use the Pregnancy Calculator
Enter the first day of your last menstrual period to see gestational age, due date and trimester.
Frequently Asked Questions
Ovulation usually happens ~2 weeks after, but LMP is a date you actually know — so standard dating starts there.