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Due Date Calculator
Free online due date calculator. Find your baby's due date from your last period or conception date.
Estimated Due Date
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Calculate your estimated due date in seconds. Enter your last menstrual period or conception date and instantly find when your baby is expected to arrive.
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FREQUENTLY ASKED QUESTIONS
How is a due date calculated?
Add 280 days (40 weeks) to the first day of your last menstrual period. This is called Naegele's rule.
How accurate is a due date?
Only about 5% of babies are born on their exact due date. Most arrive within 2 weeks before or after.
What if I know my conception date?
Add 266 days (38 weeks) to your conception date to find your due date.
What is a full-term pregnancy?
A full-term pregnancy is 39-40 weeks. Babies born between 37-42 weeks are considered term.