🍼 Women's Health

Due Date Calculator

Estimate your baby's due date and key pregnancy milestones using Naegele's Rule. Supports LMP, conception date, ultrasound, and IVF methods.

Pregnancy Details

Choose your calculation method

Select your method and enter date
Calculate your due date with 4 different methods.

Trimesters

FirstWeeks 1–12
SecondWeeks 13–26
ThirdWeeks 27–40

Frequently Asked Questions

How is due date calculated?
Naegele's Rule: Due Date = First day of LMP + 280 days (40 weeks). Only ~5% of babies are born on their exact due date.
What is gestational age?
Gestational age counts from the first day of your last period, not conception. So at conception you are already ~2 weeks pregnant by gestational age.