Due Date Calculator

Calculate your estimated delivery date and track pregnancy progress

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Due Date Calculator

The Due Date Calculator estimates the delivery date of a pregnant woman based on her last menstrual period (LMP), ultrasound, conception date, or IVF transfer date.

📅 Pregnancy Information

weeks
days

📋 Due Date Results

Estimated Due Date
Mar 12, 2026
Current Progress
Week 9 (8 weeks 4 days)
First Trimester
21% complete
Baby Size 0.9 inch (2.3 cm)
Baby Weight 0.07 ounce (2 grams)
Likely Conception Date Jun 19, 2025
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Note: The results of this calculator are estimations based on averages for single pregnancy. The results for twin pregnancy or multiple pregnancy are different.

📊 Pregnancy Timeline

Week Date Range Trimester Important Milestones

📚 Understanding Due Date Estimation

What is a Due Date?

The due date, also known as the estimated date of confinement, is an estimation of when a pregnant woman will deliver her baby. Only 4% of births occur on the estimated due date.

Estimation Methods

Due dates can be estimated using the last menstrual period, ultrasound measurements, conception date, and IVF transfer date, each with varying degrees of accuracy.

Term Classifications

Babies born at 37-39 weeks are early term, 39-41 weeks are full-term, 41-42 weeks are late-term. Births before 37 weeks are preterm, after 42 weeks are postterm.

Reference Point

The due date serves as an important reference for healthcare providers to monitor pregnancy progress and make decisions about medical interventions if necessary.