🤱 Pregnancy Calculator
Calculate due date, current pregnancy week, trimester information, and important milestone dates.
⚕️ Health Disclaimer: This calculator is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making health decisions.
Pregnancy Calculator Information
📅 Accurate Dating
Calculate due dates using the most common methods: last menstrual period, conception date, or known due date from ultrasound.
📊 Weekly Tracking
Track your current pregnancy week, trimester, and important milestones throughout your pregnancy journey.
👶 Development Info
Learn about your baby's development at each stage with week-by-week information and milestone tracking.
Pregnancy Calculator FAQ
How accurate is the due date calculation?
Due date calculations are estimates based on a 280-day (40-week) pregnancy from the last menstrual period. Only about 5% of babies are born on their exact due date, with most births occurring within 2 weeks of the estimated date.
Which calculation method is most accurate?
Conception date is most accurate if known precisely. However, the last menstrual period method is most commonly used since conception dates are often uncertain. Ultrasound dating in early pregnancy is considered most reliable.
When do the trimesters begin and end?
First trimester: weeks 1-12, Second trimester: weeks 13-26, Third trimester: weeks 27-40. Each trimester brings different developments and potential symptoms.
Should I rely solely on this calculator?
This calculator provides estimates for educational purposes. Always consult with your healthcare provider for official due dates and pregnancy monitoring. Ultrasounds and medical examinations provide more precise dating.
When to Use This Calculator
Use this to track your pregnancy week by week, understand developmental milestones, estimate important appointment windows (anatomy scan, glucose test), and calculate your current trimester.
Common Mistakes to Avoid
- Confusing gestational age with fetal age — gestational age counts from the first day of your last period, adding ~2 weeks before conception.
- Relying solely on LMP dates if your cycles are irregular — ask your doctor for an ultrasound-based dating for greater accuracy.
- Stressing about exact milestones — fetal development timelines are averages; healthy babies vary in their developmental pace.