What Is Due Date Calculator?
Ultrasound dating may differ.
How to Use Due Date Calculator
Enter LMP date.
How Does Due Date Calculator Work?
Ultrasound dating may differ.
Formula
LMP + 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.