Expecting a new arrival? Our Due Date Calculator makes it easy to find out when your baby might be due. Simply enter your last period date to see your estimated timeline.
Birth Probability Calendar
Birth Probability Calendar
Pregnancy Progress
Current Status
Key Dates
Your Pregnancy Timeline: Key Milestones
Weeks 6-9: First Heartbeat
The baby’s heartbeat can typically be detected for the first time via a transvaginal ultrasound. This is often one of the first and most exciting milestones for new parents.
Week 12: End of First Trimester
Reaching the end of the first trimester is a significant milestone. At this point, the risk of miscarriage drops substantially, and many people feel more comfortable sharing their news.
Weeks 18-22: Anatomy Scan & Gender Reveal
The mid-pregnancy ultrasound, or anatomy scan, checks on the baby’s development. This is often when parents can, if they choose, find out the baby’s sex.
Week 24: Viability
This is generally considered the point of viability, meaning a baby born at this stage has a chance of survival with intensive medical care. Every week from this point on significantly increases that chance.
Week 28: End of Second Trimester
As you enter the third trimester, your baby’s development focuses on gaining weight and preparing for birth. You may begin to see your healthcare provider more frequently for check-ups.
Week 37: Full Term
Congratulations, your baby is now considered “full term”! While your due date may still be a few weeks away, the baby’s lungs are mature and they are ready for life outside the womb.
How to Use This Calculator
- Enter Your LMP
– Select the first day of your most recent period. - Adjust Cycle Length
– The default is 28 days. Change it if your cycles are shorter or longer on average. - Click Calculate
– Instantly see your EDD, weeks pregnant, and more.
Your Results Explained
- Estimated Due Date (EDD)
We calculate this by adding 280 days (40 weeks) to your LMP, then adjusting for your cycle length. - Weeks Pregnant
How many weeks have passed since your LMP. - Trimester
- First: up to 12 weeks
- Second: 13–26 weeks
- Third: 27–40 weeks
- Baby Size & Weight
Approximate length and weight for your current gestational week. - Estimated Conception Date
Typically about 14 days after your LMP. - Pregnancy Progress
A percentage of your progress through a standard 40-week pregnancy timeline. - Suggested Test Date
If you’re confirming early pregnancy, we’ll recommend this as the optimal day to test.
Pregnancy Terms at a Glance
| Term | Weeks | What It Means |
|---|---|---|
| Preterm | < 37 | May need extra medical support |
| Early | 37 – 39 | Healthy, but final development is underway |
| Full | 39 – 41 | Optimal window for delivery |
| Late | 41 – 42 | Monitoring or induction may be discussed |
| Post-term | > 42 | Labor might be induced to reduce risks |
Note: Your EDD is a guideline—only about 5 % of babies are born exactly on that date. Plan for a “due date range” two weeks before to two weeks after your calculated date, and always confirm your timeline with your healthcare provider.