Pregnancy Calculator - Due Date Estimator

Enter your last period date to find your due date, current week, and upcoming milestones

Calculate Your Due Date

How Is the Due Date Calculated?

The estimated due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period (LMP). This is the standard medical calculation method.

Pregnancy Trimesters

Pregnancy is divided into 3 trimesters: First trimester (weeks 1-12), Second trimester (weeks 13-27), Third trimester (weeks 28-40).

Add All Appointments to Your Calendar

With ALMO AI you can add all test appointments to a shared calendar with your partner. Both of you get reminders, both stay updated.

Download ALMO AI for Free

Shared couple calendar with reminders for tests, appointments and milestones