Pregnancy Due Date Calculator
Estimate your due date based on your last menstrual period.
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Estimating Your Baby's Arrival
A pregnancy due date calculator is a simple tool used to predict when a baby might be born. It provides an estimated delivery date (EDD) to help expectant parents and healthcare providers plan for the new arrival.
How It Works (Naegele's Rule): The most common method for calculating a due date is Naegele's Rule. It's a simple calculation:
1. Take the first day of your last menstrual period (LMP).
2. Add one year.
3. Subtract three months.
4. Add seven days.
This calculation assumes a regular 28-day menstrual cycle. Remember, this is only an estimate—only about 5% of babies are born on their exact due date. It provides a useful timeline for pregnancy milestones.