Pregnancy Calculator
Calculate important pregnancy dates including your estimated due date, conception date, and track your pregnancy week by week.
Category: Fitness & Health
Pregnancy Calculator
Enter your information to calculate important pregnancy dates.
Frequently Asked Questions
How accurate is the pregnancy calculator?
The pregnancy calculator provides estimates based on standard pregnancy durations and averages. It's most accurate when you have regular menstrual cycles and know the first day of your last period. However, every pregnancy is different, and your healthcare provider may adjust your due date based on ultrasound measurements.
What is the difference between calculating from last period vs. conception date?
Calculating from the last menstrual period (LMP) uses the standard medical approach of counting 40 weeks from the first day of your last period. This method includes about two weeks before conception actually occurs. Calculating from conception date starts from when you actually became pregnant, which is typically about 38 weeks before birth.
How are trimesters divided in pregnancy?
Pregnancy is typically divided into three trimesters: First trimester (weeks 1-13), Second trimester (weeks 14-26), and Third trimester (weeks 27-40). Each trimester is associated with different developmental milestones and maternal changes.
What if my cycles are irregular?
If your menstrual cycles are irregular, the pregnancy calculator's estimate may be less accurate. In this case, your healthcare provider might rely more on ultrasound measurements to establish your due date. An early ultrasound (before 20 weeks) can provide a more precise estimate of gestational age.