Baby Delivery Due Date Calculator

This is a useful tool for expecting parents to estimate their baby’s due date based on the first day of their last menstrual period.

Steps to calculate due date

To calculate pregnancy days and the expected delivery date, you need to know the date of the woman’s last menstrual period (LMP). Here’s how you can calculate it:

Determine the first day of the woman’s last menstrual period (LMP).

  1. Add 7 days to the LMP date.
  2. Count back 3 months from the adjusted LMP date.
  3. Add 1 year to the adjusted LMP date.

Due date estimate calculator example:

Let’s break down the steps with an example:

Suppose the LMP was on January 1, 2024.

LMP: January 1, 2024

  1. Add 7 days: January 8, 2024
  2. Count back 3 months: October 8, 2023
  3. Add 1 year: October 8, 2024

So, in this example, the expected delivery date would be around October 8, 2024.

Important note

Keep in mind that this method assumes a regular menstrual cycle of 28 days and ovulation occurring around day 14. It may not be accurate for everyone, as cycles can vary. It’s always recommended to consult a healthcare professional for a more accurate estimation based on individual circumstances.

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