Calculation of LMP and EDD

April 21, 2025 2 min read

The Last Menstrual Period (LMP) and Estimated Due Date (EDD) are crucial markers in pregnancy. Accurate calculation of lmp and edd helps in tracking gestational age and planning prenatal care. Our Pregnancy Calculator & Ovulation Estimator offers a comprehensive solution for both pregnancy tracking and fertility planning.

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Determine your due date and track key milestones using our comprehensive calculator.

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How Our Tool Can Help

Our tool simplifies the calculation of lmp and edd, providing a personalized timeline for your pregnancy journey or conception planning. Whether you're trying to conceive or already pregnant, accurate dates are essential.

Key Features

  • Pregnancy Calculator: Determine your EDD, current trimester, and key milestones using your LMP, conception date, or known due date.
  • Ovulation Estimator: Pinpoint your fertile window and ovulation day based on your cycle length, complete with a six-month interactive calendar.
  • Personalized Timeline: Navigate your pregnancy or plan for conception with personalized predictions and timelines.
  • User-Friendly Interface: Access seamlessly across all devices, making it easy to track your reproductive health.

Different Methods for Calculation of LMP and EDD

There are several methods available for calculation of lmp and edd. Understanding these methods can help you better utilize our tool.

  • Using Last Menstrual Period (LMP): Adding 280 days (40 weeks) to the first day of your last period.
  • Using Conception Date: Adding 266 days (38 weeks) to the date of conception.
  • Using Ultrasound: Especially useful in early pregnancy, an ultrasound can accurately estimate gestational age.
  • Using IVF Transfer Date: For pregnancies achieved through IVF, adding 266 days to the date of conception.

Why Accurate Dates Matter

Precise calculation of lmp and edd is essential for scheduling prenatal appointments, interpreting test results, and ensuring appropriate fetal growth. Early and accurate dating is vital for timely interventions and optimal pregnancy outcomes. Use our tool to stay informed and prepared throughout your journey.

Get Started Today

Ready to take control of your reproductive health? Use our Pregnancy Calculator & Ovulation Estimator to accurately determine your LMP and EDD. Our user-friendly interface ensures a seamless experience across all devices.