Family Planning Tool

Pregnancy Due Date Calculator

Find out when your baby is due and what stage of pregnancy you are in with our precise calculator.

Baby Due Date

Most cycles are 28 days.

How is Due Date Calculated?

Most doctors calculate your due date (EDD) as 280 days from the first day of your last menstrual period (LMP). This method is known as Naegele's Rule. It assumes a regular 28-day cycle. If your cycle is longer or shorter, our calculator adjusts for that automatically.

Calculation Methods

  • Last Period (LMP): The most common method used by OB/GYNs.
  • Conception Date: If you know the exact date of ovulation or conception (common with IVF).
First Trimester
Weeks 1 – 12
Rapid development, heart beat visible.
Second Trimester
Weeks 13 – 26
Baby movement felt, gender reveal.
Third Trimester
Weeks 27 – 40+
Final growth, preparation for birth.

Note: Only about 4% of babies are born on their exact due date. Most are born within the two weeks before or after.

Frequently Asked Questions

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What to Do Next

Start your pregnancy journey with these helpful resources.

Track Pregnancy

Log symptoms, appointments, and milestones.

Pregnancy Path

Week-by-week guidance for your pregnancy journey.

Track Weight Gain

Monitor healthy weight gain during pregnancy.