Pregnancy Calculator
Calculate Your Pregnancy Timeline
Enter your last menstrual period (LMP) or conception date to estimate your due date and track your pregnancy progress.
Pregnancy typically lasts about 40 weeks from the first day of your last menstrual period (LMP) or 38 weeks from conception.
Due Date
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Current Week
—
Days Remaining
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Trimester Breakdown
First Trimester
Week 1 to Week 12
Second Trimester
Week 13 to Week 26
Third Trimester
Week 27 to Week 40
Current Stage
Based on your calculation, you’re in the early stages of pregnancy.
What is a Pregnancy Calculator?
A pregnancy calculator is a helpful online tool that estimates your due date, determines how far along you are in your pregnancy, and outlines key milestones in your journey to motherhood. Whether you're trying to conceive or already expecting, this calculator can give you a quick snapshot of your pregnancy timeline.
How Does a Pregnancy Calculator Work?
The most common method used by pregnancy calculators is based on the first day of your last menstrual period (LMP). From that date, it adds 280 days (or 40 weeks) to estimate your due date. Some calculators also allow input of the conception date, which can be even more accurate if known.
Key Inputs:
- First Day of Last Menstrual Period (LMP)
- OR
- Date of Ovulation or Conception (if known)
The tool will then calculate:
- Estimated Due Date
- Current Pregnancy Week
- Trimester
- Fetal Development Milestones
Why Use a Pregnancy Calculator?
Here are several reasons why this tool is a must-have for every mom-to-be:
1. Accurate Due Date Estimation
Your doctor will also calculate your due date using a similar method during your first prenatal visit. This tool gives you a head start and helps you prepare ahead of time.
2. Track Pregnancy Progress
Find out how far along you are in your pregnancy and what developmental changes your baby is going through week by week.
3. Trimester Breakdown
Understand which trimester you’re in and what to expect during that period in terms of symptoms, medical tests, and emotional changes.
4. Plan for Prenatal Appointments
Knowing your stage of pregnancy helps you schedule important prenatal tests and screenings at the right time.
5. Prepare for Maternity Leave & Baby Essentials
Accurate due date estimation lets you plan your work schedule and start buying baby products when it’s most convenient.
What Are the Three Pregnancy Trimesters?
- First Trimester (Weeks 1–13): Implantation, morning sickness, first heartbeat, and early development.
- Second Trimester (Weeks 14–27): Baby's movements begin, organs develop, and gender may be revealed.
- Third Trimester (Weeks 28–40): Baby gains weight, positions for birth, and prepares to enter the world.
Can a Pregnancy Calculator Replace a Doctor?
No. While a pregnancy calculator is a great starting point, it’s not a substitute for professional medical advice. It helps you stay informed and prepared but should be used alongside regular prenatal care from your OB/GYN.
While our tool is helpful for estimation, always consult a healthcare professional for medical advice. You can learn more from the American College of Obstetricians and Gynecologists (ACOG) about how your fetus grows during pregnancy.
Try Our Free Pregnancy Calculator
Simply enter the first day of your last period or your conception date, and let our tool calculate everything for you. It’s fast, easy, and 100% free!
🔗 [Use the Pregnancy Calculator Now]
Final Thoughts
Pregnancy is a beautiful journey filled with anticipation and joy. A pregnancy calculator makes it easier to understand your progress, prepare for upcoming changes, and enjoy every step toward meeting your baby.
Bookmark this tool and use it anytime to stay informed and empowered throughout your pregnancy.
