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Pregnancy Week Calculator

Calculate your due date, current pregnancy week, trimester, and track your baby's development week by week with detailed information and milestones.

Pregnancy Information

Last Menstrual Period
Conception Date
Ultrasound Data
Based on Naegele's Rule: Due Date = LMP + 280 days. Most pregnancies last about 40 weeks from the first day of your last period.
weeks + days
Ultrasound measurements in early pregnancy (especially first trimester) are the most accurate for dating a pregnancy.
Leave blank to use today's date:

Pregnancy Progress

12 weeks
+ 4 days
Current Pregnancy Week
Oct 08, 2024
Estimated Due Date
2
Trimester
88
Days Pregnant
30%
Progress Complete
Pregnancy Trimester Progress
Trimester 1
Trimester 2
Trimester 3
Weeks 1-13 Weeks 14-27 Weeks 28-40
Time to Due Date
192 days
Conception Period
Jan 8-15, 2024

Pregnancy Timeline

Week 4-5
Positive Pregnancy Test
Most women get a positive pregnancy test around this time. Baby's neural tube (brain and spinal cord) begins to form.
Week 6-8
First Ultrasound
Heartbeat can usually be detected. Major organs begin to form. Baby is about the size of a raspberry.
Week 12
End of First Trimester
Risk of miscarriage decreases significantly. Nausea often subsides. All vital organs are formed.
Week 16-20
Gender Reveal & Quickening
May feel baby's first movements (quickening). Anatomy scan can often reveal baby's gender.
Week 28
Third Trimester Begins
Baby's survival rate if born prematurely increases significantly. Regular kick counts recommended.

Baby Development This Week

Baby's Size

About 2.1 inches (5.4 cm) from crown to rump, roughly the size of a lime. Weight: Approximately 0.49 ounces (14 grams).

Key Developments

Reflexes are developing. Fingers and toes are fully separated. Intestines are moving into the abdomen from the umbilical cord.

Mom's Changes

Nausea may be decreasing. Energy levels might improve. Uterus is about the size of a grapefruit. Visible baby bump may appear.

Important Medical Disclaimer

This pregnancy calculator provides estimates based on standard medical calculations. Every pregnancy is unique, and only your healthcare provider can give you accurate information about your specific pregnancy. Always consult with your doctor or midwife for medical advice, and attend all recommended prenatal appointments.

Pregnancy Tips & Recommendations

Nutrition & Diet

Take prenatal vitamins with folic acid. Eat balanced meals with plenty of fruits, vegetables, lean proteins, and whole grains. Stay hydrated with 8-10 glasses of water daily.

Exercise & Activity

Continue moderate exercise like walking, swimming, or prenatal yoga unless advised otherwise by your doctor. Aim for 30 minutes of activity most days.

Rest & Sleep

Get plenty of rest. Sleep on your side (preferably left side) to improve circulation. Use pillows for support as your belly grows.

Prenatal Care

Schedule regular prenatal appointments. Keep track of your pregnancy milestones. Discuss any concerns or symptoms with your healthcare provider promptly.

Avoid These

Avoid alcohol, tobacco, and recreational drugs. Limit caffeine to 200mg daily. Avoid raw fish, unpasteurized dairy, and deli meats unless heated thoroughly.

Support System

Build a strong support network. Consider childbirth classes. Discuss birth plans with your partner and healthcare provider.

Features of Our Pregnancy Calculator

Accurate Due Date Calculation

Calculate your estimated due date using multiple methods: last menstrual period, conception date, or ultrasound data.

Week-by-Week Tracking

Track your pregnancy progress week by week with detailed information about baby's development and mom's changes.

Trimester Visualization

Visualize your trimester progress with interactive charts and see exactly where you are in your pregnancy journey.

Baby Development Info

Get detailed information about your baby's size, development milestones, and what to expect each week.

Multiple Calculation Methods

Choose from different calculation methods based on the information you have: LMP, conception date, or ultrasound measurements.

Privacy Protected

All calculations are done locally in your browser. Your personal pregnancy information never leaves your computer.