Due Date Calculator

What will my due date tell me?

Your estimated due date is the start of an incredible 40-week journey. But pregnancy isn't just about the destination — it's about every moment along the way. Our pregnancy week by week guide walks you through fetal development, your changing body, and what to expect at each stage.

While calendars and trackers help you plan, nothing compares to the emotional connection of hearing your baby's voice. Baby Whispers sends you a daily AI-generated voice note that sounds like your little one — personalized with their nickname and tailored to your stage of pregnancy.

After calculating your due date, explore how pregnancy tracking with daily voice notes can transform your mornings into moments of connection. Your first message can arrive tomorrow.

How due dates work in pregnancy

A full-term pregnancy typically lasts 40 weeks (280 days) from the first day of your last menstrual period (LMP), or 38 weeks (266 days) from conception. Pregnancy is divided into three trimesters:

• ●First trimester (weeks 1-13): Your baby's heart begins beating, and major organs form. This is when most pregnancy symptoms like morning sickness and fatigue occur.
• ●Second trimester (weeks 14-27): Your baby grows rapidly, you may feel the first kicks, and many early symptoms subside. Often called the “golden period” of pregnancy.
• ●Third trimester (weeks 28-40): Your baby gains weight and prepares for birth. You may experience Braxton Hicks contractions and increased discomfort.

For a deeper understanding, explore our week-by-week pregnancy guide with detailed information for every stage.