WHWD

Pregnancy Due Date Calculator

Estimate a pregnancy due date from the first day of the last menstrual period and usual cycle length.

First day of last periodUsual cycle length
Interactive tool

Estimated due date

April 25, 2027

This is an estimate only. Ultrasound dating and a clinician's assessment may give a different date.

Estimated conception date: August 2, 2026. Estimated 37-to-41-week window: April 4, 2027 to May 2, 2027.

These results are educational estimates, not a diagnosis or treatment plan. For personal medical advice, pregnancy guidance, chronic conditions, eating concerns, or medication decisions, speak with a qualified health professional.

Related guides

Read practical articles connected to this calculator.

How to use this result

Use the estimate as a starting point for learning and planning. Recheck the inputs, compare the result with how you feel day to day, and ask a qualified professional before making major changes to diet, exercise, medication, or pregnancy-related decisions.