Every week is a miracle
Discover exactly how far along you are in your beautiful pregnancy journey. Your body is doing incredible things every single day!
Calculate Your Pregnancy Week
Choose your preferred calculation method and get precise results
Most accurate method used by doctors
Every Week is a Milestone
Track your pregnancy journey week by week with precise calculations and celebrate every step of your baby's amazing development.
What You'll Learn
- • Exact week and days of pregnancy
- • Which trimester you're in
- • Days until your due date
- • Key pregnancy milestones
Three Methods Available
- • LMP (most common medical method)
- • Due date (from healthcare provider)
- • Conception date (if known exactly)
- • All methods are equally accurate
Understanding Pregnancy Weeks
Pregnancy weeks are calculated using medical standards that might seem confusing at first:
Why Start from LMP?
Medical professionals count from your last menstrual period because it's a definite date, even though conception occurs ~2 weeks later.
The 40-Week Journey
A full-term pregnancy is 280 days (40 weeks) from LMP, or 266 days (38 weeks) from conception.
"2 Weeks Pregnant" at Conception
This means you're already "2 weeks pregnant" at the moment of conception - it's just how the medical calendar works!
Your Pregnancy Trimesters
First Trimester (Weeks 1-13)
The foundation is laid! All major organs and body systems begin forming.
- • Heart starts beating (week 6)
- • Brain development begins
- • Morning sickness peaks
- • Fatigue is common
Second Trimester (Weeks 14-27)
The "honeymoon period" - energy returns and you start showing!
- • Feel baby's first movements
- • Anatomy scan around week 20
- • Morning sickness usually subsides
- • The famous pregnancy glow
Third Trimester (Weeks 28-40+)
The final stretch as baby prepares for life outside the womb.
- • Baby gains weight rapidly
- • Lungs mature for breathing
- • Braxton Hicks contractions
- • Nesting instinct kicks in
Making the Most of Each Week
Each week brings new developments and opportunities:
- • Track symptoms: Note changes to discuss with your doctor
- • Plan appointments: Schedule check-ups based on your timeline
- • Prepare gradually: Baby preparations can be spread across trimesters
- • Document memories: Take weekly photos, keep a journal
- • Stay informed: Learn what's happening each week
Remember: Every pregnancy is unique. These calculations provide general guidance, but your healthcare provider's assessments are most important.
Calculation Methods
Last Menstrual Period
Standard medical method, counts from first day of your last period
Due Date
Works backwards from your doctor's estimated due date
Conception Date
If you know exactly when conception occurred
Good to Know
Pregnancy weeks are counted from your last menstrual period, not conception. This means you're technically "2 weeks pregnant" at conception! Every baby develops at their own pace, so use these as gentle guidelines.
Related Pregnancy Tools
Frequently Asked Questions
How do you calculate which week of pregnancy I'm in?
We calculate your pregnancy week based on the first day of your last menstrual period (LMP), which is the standard medical method. This counts from about 2 weeks before conception actually occurred.
Why does my pregnancy week seem different from what I expected?
Medical pregnancy dating starts from your last menstrual period, not from conception. This means you're already considered 2 weeks pregnant at the time of conception, which can be confusing but is the standard medical practice.
What if I have irregular periods?
If you have irregular periods, the week calculator may be less accurate. Your healthcare provider can provide a more precise estimate using ultrasound measurements and other factors.
About the Pregnancy Week Calculator
Track your pregnancy progress week by week. Get detailed information about your current pregnancy week, baby's development, size comparisons, and what to expect each week.
Key Features
- •Current week calculation
- •Days remaining counter
- •Baby size comparison
- •Weekly development info
- •Symptom tracking
Perfect For
- •Daily pregnancy tracking
- •Doctor visit preparation
- •Pregnancy journaling
- •Family updates
Important Limitations
- •Based on estimated conception date
- •Individual pregnancies may vary
- •Not a substitute for medical care
Helpful Tips
- •Pregnancy is counted from your last period
- •Full term is 37-42 weeks
- •Track symptoms to discuss with doctor