Pregnancy Due Date and Milestone Calculator

Pregnancy Due Date and Milestone Calculator

Using the Calculator

  1. Select Date Type:

    Choose whether you want to enter a "Conception Date", "Last Menstrual Period Date", or a "Due Date" from the dropdown menu.

  2. Enter Date:

    Input the relevant date in the provided date field. If you selected "Conception Date," enter the date of conception. If you selected "Last Menstrual Period Date," enter the date of your last menstrual cycle. If you selected "Due Date," enter the expected due date.

  3. Calculate Milestones:

    Click the "Calculate Milestones" button. The calculator will process the input date and display a list of pregnancy milestones with their corresponding dates.

  4. View Results:

    The results section will show a detailed list of milestones, including the week of pregnancy and a brief description of each milestone.

Pregnancy Due Date and Milestone Calculator


Disclaimer

The dates, milestones, and calculations provided by this pregnancy calculator are estimates based on average menstrual cycles, typical pregnancy durations, and general fetal development timelines. These calculations assume a 28-day cycle with ovulation occurring on day 14, and a pregnancy duration of approximately 40 weeks from the last menstrual period.

Every pregnancy is unique, and individual experiences may vary significantly. Factors such as irregular menstrual cycles, variations in ovulation timing, and individual fetal development can affect the accuracy of these estimates. The actual dates for conception, due date, and specific milestones may differ from those calculated here.

Less than 4% of births occur on the exact calculated due date, with about 60% occurring within a week of the due date, and nearly 90% within two weeks. The conception date estimate may be particularly imprecise, as actual conception can occur anywhere from 11 to 21 days after the first day of the last menstrual period, depending on individual cycle length and ovulation timing.

This calculator is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. For the most accurate information about your pregnancy, including specific dates and milestones, please consult with your healthcare provider. Regular prenatal check-ups and ultrasounds, particularly early in pregnancy, are the most reliable methods for dating your pregnancy, tracking its progress, and monitoring your baby's development.

If you have received a positive pregnancy test or suspect you may be pregnant, it is recommended that you speak with a healthcare professional for guidance and to begin appropriate prenatal care.

Milestone Databases

The milestones included in the calculator are based on widely recognized pregnancy development stages and timelines. The information is compiled from reputable sources to ensure accuracy and reliability. Here are the primary sources:

  • Healthline: Offers a comprehensive list of pregnancy milestones, from the first symptoms and positive pregnancy test to hearing the baby's heartbeat and reaching the due date.
  • UNICEF Parenting: Guides expectant parents through the 40 weeks of pregnancy, highlighting key developmental stages and milestones.
  • Revere Health: Details the milestones for each trimester, including the development of the embryo, the onset of Braxton-Hicks contractions, and the importance of staying active and hydrated.
  • The American College of Obstetricians and Gynecologists (ACOG): ACOG is a professional association of physicians specializing in obstetrics and gynecology in the United States.
  • The National Institutes of Health (NIH): The NIH is the primary agency of the United States government responsible for biomedical and public health research.
  • The World Health Organization (WHO): The WHO is a specialized agency of the United Nations responsible for international public health.