Pregnancy Due Date Calculator

Calculate your estimated due date, track pregnancy progress, and get week-by-week information about your baby's development.

Calculate Your Due Date

Last Period

Conception Date

Ultrasound Date

First day of your last menstrual period (LMP)

Average cycle length (optional) Most due date calculations assume a 28-day cycle with ovulation on day 14.

Conception date (if known)

How to find conception date

Conception usually occurs about 11-21 days after the first day of your last period. If you know the exact date of conception, enter it here for a more accurate due date.

Ultrasound date

Gestational age at ultrasound

Enter the gestational age measured during your ultrasound scan.

Pregnancy Results

Your Results Will Appear Here

Enter your information and click "Calculate Due Date" to see your estimated due date and pregnancy timeline.

Pregnancy Information & Tips

Baby's Development

🥑

Your baby is about the size of an avocado

Your baby's major organs are formed and beginning to function. Tiny fingerprints are now in place.

Health Tips

Take prenatal vitamins with folic acid
Stay hydrated - drink plenty of water
Eat small, frequent meals to manage nausea
Get moderate exercise as approved by your doctor
Avoid alcohol, smoking, and limit caffeine

Important Milestones

First Prenatal Visit: Usually between 8-12 weeks

Anatomy Scan: Around 18-22 weeks

Glucose Test: Between 24-28 weeks

Baby's Movements: Usually felt between 18-25 weeks

Common Questions

How accurate is the due date? Only about 5% of babies are born on their due date. Most are born within two weeks before or after.

Can my due date change? Yes, your due date may be adjusted based on ultrasound measurements.