Due Date Calculator
Calculate your baby's due date from last menstrual period or conception date. Includes a full pregnancy timeline and trimester breakdown.
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Calculator insights
What this calculator does
Due Date Calculator helps you quickly estimate calculate your baby's due date from last menstrual period or conception date. includes a full pregnancy timeline and trimester breakdown. with clean output and clear next steps.
How the calculation works
Enter First Day of Last Period, Average Cycle Length and this calculator uses standard formulas to determine Due Date (EDD) and Estimated Conception. The output is displayed immediately in a user-friendly format.
Example calculation
For example, enter realistic values into the Due Date Calculator to see how the calculator produces Due Date (EDD) and Estimated Conception that you can use for planning and comparison.
Disclaimer
The calculations provided by this website are for informational purposes only and should not be considered financial, legal, tax, or professional advice.
Frequently Asked Questions
How is due date calculated?
Naegele's rule: Add 280 days (40 weeks) to the first day of your last menstrual period. This assumes a 28-day cycle with ovulation on day 14.