Pregnancy Due Date Calculator
Calculate your pregnancy due date from your last menstrual period (LMP). See your current week, trimester, baby size comparison (fruit analogy), and a timeline of key milestones from first heartbeat to full term.
Enter the first day of your last period to calculate your due date.
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How to Use Pregnancy Due Date Calculator
- 1Enter the first day of your last menstrual period.
- 2View your estimated due date and current week.
- 3Track your progress through the milestone timeline.
- 4See your baby's size comparison and trimester status.
Frequently Asked Questions
The due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period (LMP), known as Naegele's rule.
Only about 5% of babies are born on their exact due date. Most arrive within two weeks before or after.
First trimester: weeks 1-12. Second trimester: weeks 13-26. Third trimester: weeks 27-40.
Yes, the Pregnancy Due Date Calculator is fully responsive and works perfectly on smartphones, tablets, and desktop computers. Simply open NexTool in your mobile browser and navigate to the tool — no app download required.
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About Pregnancy Due Date Calculator
Calculate your pregnancy due date from your last menstrual period (LMP). See your current week, trimester, baby size comparison (fruit analogy), and a timeline of key milestones from first heartbeat to full term.
NexTool's Pregnancy Due Date Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.
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