June 26, 2025

Pregnancy Calculator

Pregnancy calculator



Try Our Beautiful Online Pregnancy Calculator

Use the interactive tool Pregnancy Calculator instantly calculate your estimated due date, pregnancy week, and more!

👩‍⚕️ Enter Your Details:

Cycle Length (in days): 28 29 30 31

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What Is a Pregnancy Calculator?

A pregnancy calculator is an online tool designed to help expectant mothers determine key milestones during pregnancy. With just your Last Menstrual Period (LMP) and your average cycle length, it calculates your estimated due date, the current pregnancy week, and even tracks which trimester you are in.

Many pregnancy calculators, including ours, also estimate your baby’s size based on the week of pregnancy.

Why Use a Pregnancy Calculator?

Knowing how far along you are in your pregnancy helps you plan medical appointments, manage symptoms, and emotionally prepare for the baby’s arrival. Here are some key benefits:

  • 📅 Due Date Estimation: Know when to expect your little one.
  • 🍼 Weekly Tracking: Track your baby’s growth and changes.
  • ❤️ Trimester Awareness: Understand which stage of pregnancy you are in.
  • 💡 Educational Insights: Learn what happens each week during pregnancy.

How Does Our Pregnancy Calculator Work?

Our tool uses the standard 280-day gestational cycle, which starts from the first day of your LMP. It calculates:

  1. Estimated Due Date = LMP + 280 days (40 weeks)
  2. Pregnancy Week = Days since LMP ÷ 7
  3. Trimester = Based on which week you’re in
  4. Baby Size = Compared with everyday fruits and vegetables!

It’s simple, fast, and fun to use!

How Accurate Is a Pregnancy Calculator?

While the pregnancy calculator is a reliable tool, it’s not a substitute for medical advice. Ultrasounds, especially in early pregnancy, provide the most accurate due dates. However, our calculator gives you a great starting point and aligns closely with clinical guidelines.

When Should I Use the Pregnancy Calculator?

You can use this tool anytime after confirming your pregnancy or even before, if you’re tracking your cycle. It’s most effective:

  • After a missed period
  • After taking a home pregnancy test
  • During early doctor consultations

What Information Do You Need?

To use the pregnancy calculator, you only need:

  1. First day of your last period (LMP)
  2. Average cycle length (usually 28 days)

The tool does all the rest automatically for you.

Pregnancy Weeks, Trimesters, and Baby Size Chart 📊

Here’s a quick overview of what to expect:

WeekTrimesterBaby Size
4First TrimesterPoppy Seed
8First TrimesterRaspberry
12First TrimesterLime
16Second TrimesterAvocado
20Second TrimesterBanana
24Second TrimesterCantaloupe
28Third TrimesterEggplant
32Third TrimesterSquash
36Third TrimesterHoneydew
40Third TrimesterWatermelon

Pregnancy Symptoms Week by Week

Each week of pregnancy brings new changes. While every woman is different, here are common pregnacy symptoms by trimester:

First Trimester (Weeks 1–12)

  • Morning sickness
  • Breast tenderness
  • Fatigue
  • Frequent urination

Second Trimester (Weeks 13–26)

  • Baby bump begins to show
  • Fewer symptoms than first trimester
  • Increased appetite
  • Quickening (feeling baby move)

Third Trimester (Weeks 27–40)

  • Shortness of breath
  • Swelling
  • Frequent doctor visits
  • Preparing for labor

Here is the detailed guide – Pregnancy Symptoms: How to Recognize the Early Signs of Pregnancy

Pregnancy Tips by Week

Staying healthy during pregnancy is essential. Here are general weekly tips:

  • Week 5: Start prenatal vitamins if you haven’t already
  • Week 10: Schedule your first prenatal ultrasound
  • Week 20: Consider a detailed anomaly scan
  • Week 30: Plan your hospital bag and birthing plan

Share & Bookmark This Pregnancy Calculator 💖

If you found this pregnancy calculator helpful, share it with friends, family, or expecting moms-to-be. Bookmark this page to check your progress weekly.


Start Your Pregnancy Journey Today!

Whether you just found out or are deep into your journey, our free pregnancy calculator is here for you. Stay informed, stay prepared, and most importantly – enjoy this beautiful phase of life.

👉 Use the calculator now to find your due date, track your week, and understand what’s happening inside your body.

🔗 Bookmark this page and return every week to see how your baby is growing!

Keyword Focus:

  • Primary: pregnancy calculator
  • Secondary: due date calculator, pregnancy week calculator, pregnancy tracker, baby size calculator, pregnancy calendar

Internal Links Suggestion:

  • How to take a pregnancy test
  • First trimester care tips
  • Preparing for baby delivery

Know. Care. Prepare. – Your trusted companion on the journey to motherhood.

Frequently Asked Questions (FAQs)

1. What is a pregnancy calculator and how does it work?
A pregnancy calculator is an easy-to-use online tool that estimates your due date, current week of pregnancy, trimester, and baby’s size. It uses your Last Menstrual Period (LMP) and cycle length to generate results similar to a professional pregnancy calendar.

2. How accurate is a due date calculator?
A due date calculator provides a close approximation, especially in early pregnancy. However, for the most accurate results, it’s best to confirm with an ultrasound during your first prenatal visit.

3. Can I trust a pregnancy week calculator online?
Yes, most pregnancy week calculators follow standard 280-day gestation models. If your LMP and cycle details are entered correctly, the results will align closely with your actual pregnancy stage.

4. What information do I need to use a pregnancy tracker?
To use any pregnancy tracker, you typically need two things: the first day of your last period and your average cycle length (usually 28 days).

5. What if my periods are irregular—will the calculator still work?
If you have irregular cycles, the due date calculator may not be entirely accurate. In such cases, a dating ultrasound is a better option to determine how far along you are.

6. Is a baby size calculator safe to use during pregnancy?


Absolutely! A baby size calculator simply provides a fun and educational comparison of your baby’s size each week based on averages—like a poppy seed at week 4 or a watermelon at week 40.

7. How often should I check the pregnancy calendar?
You can check your pregnancy calendar weekly to track your baby’s development and your body’s changes. It’s also helpful when planning doctor visits, scans, and important milestones.

8. Can this tool be used for IVF pregnancies?
While the tool offers a general estimate, IVF pregnancies follow specific medical dates. In such cases, it’s best to rely on the due date calculator provided by your fertility clinic.

9. Will the calculator work if I don’t know my LMP?
If you’re unsure of your LMP, the tool won’t be accurate. In that case, consult a healthcare provider for a proper check-up or ultrasound to create your own pregnancy week calculator baseline.

10. Can I share my pregnancy tracker results with my doctor?
Yes! The results from your pregnancy tracker can help start the conversation. Print or screenshot the details and discuss them during your prenatal appointments.