Pregnancy Due Date Calculator - Estimate Due Date Online Free

Free online pregnancy due date calculator. Estimate your due date based on last menstrual period or conception date. See weekly pregnancy timeline.

How to Use the Due Date Calculator

Choose method — LMP (last menstrual period) or conception date
Enter the date — pick your LMP or conception date
Get results — estimated due date, current week, and trimester

Calculate your estimated due date and track your pregnancy progress week by week. All calculations stay in your browser.

Features

LMP method — standard 280-day calculation
Conception method — if you know the conception date
Current pregnancy week — see how far along
Trimester info — current trimester and key milestones
Key dates — important milestones calculator