What Is a Pregnancy Due Date?
A pregnancy due date is the estimated day your baby is expected to be born. Doctors typically calculate it by adding 280 days to the first day of your last menstrual period.
How Accurate Is the Due Date?
Due dates are estimates. Babies can arrive between 37 and 42 weeks and still be considered full-term.
Pregnancy Trimester Breakdown
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First Trimester: Weeks 1–12
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Second Trimester: Weeks 13–26
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Third Trimester: Weeks 27–40
Our free pregnancy due date calculator helps you estimate your baby’s expected delivery date based on your last menstrual period (LMP) or conception date. This pregnancy calculator also shows how many weeks and days pregnant you are, helping you track your trimester and fetal development timeline accurately.
Most pregnancies last about 40 weeks (280 days) from the first day of your last period. Use this tool to calculate your pregnancy weeks, trimester stage, and estimated due date instantly.
This pregnancy calculator uses standard medical guidelines to estimate:
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Estimated Due Date (EDD)
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Current pregnancy week
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Pregnancy days completed
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Trimester stage (1st, 2nd, or 3rd)
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Weeks remaining until delivery
These calculations are based on average pregnancy duration and may vary slightly for each individual.
Every pregnancy is unique. Due dates are estimates, and only about 5% of babies are born on their exact calculated due date. Ultrasound results and doctor evaluations provide more precise dating.
This calculator is for informational purposes only and does not replace professional medical advice. Always consult a qualified healthcare provider for pregnancy-related concerns.
👉 Calculate your pregnancy due date now and track your baby’s journey.
👉 Want to monitor your health? Try our BMI Calculator for pregnancy weight guidance.
👉 Stay hydrated during pregnancy — check your Water Intake Calculator next.
*** Medical Disclaimer ***
This pregnancy calculator provides estimated results based on standard medical formulas. It is not intended to diagnose, treat, cure, or prevent any medical condition. Always consult your obstetrician or healthcare provider for personalized medical guidance.