What Is Pregnancy Calculator?
Confirm dates with a clinician.
How to Use Pregnancy Calculator
Enter LMP and as-of date.
How Does Pregnancy Calculator Work?
Confirm dates with a clinician.
Formula
LMP dating + 280 days
Important Notes
Results depend on the inputs and assumptions shown on this page. Construction and finance figures are estimates. Islamic calendar conversions follow a documented algorithm and may differ from local moon sighting. Health-related tools are informational only.