Pregnancy Due Date Calculator
FeaturedEstimate your pregnancy due date from the first day of your last menstrual period.
Note: This calculator assumes a standard 28-day cycle.
About the Pregnancy Due Date Calculator
The Pregnancy Due Date Calculator estimates your baby's arrival date based on the first day of your last menstrual period (LMP) or conception date. It also provides a trimester-by-trimester timeline of your pregnancy.
How to use the Pregnancy Due Date Calculator
- 1Select your calculation method (Last Period or Conception Date).
- 2Enter the relevant date.
- 3Optionally adjust your cycle length (default is 28 days).
- 4View your estimated due date and current gestational progress.
Why people use it
- Estimate when your new family member will arrive.
- Track which trimester you are currently in.
- Plan for maternity leave and upcoming doctor visits.
- Understand how many weeks pregnant you are.
Frequently asked questions
How accurate is a due date calculator?
It's a high-quality estimate, but only about 4-5% of babies are born on their exact due date. Most arrive within two weeks before or after.
What if I have irregular cycles?
If your cycles vary significantly, an ultrasound early in pregnancy is usually the most accurate way to date the pregnancy.
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