How to Estimate Due Date
Track your timeline in seconds.
First Day of Period
Enter the date of your last menstrual period.
Cycle Length
Adjust standard 28-day cycle if needed.
Calculate
See your EDD and trimester timeline instantly.
What does this tool do?
An exciting journey begins. Calculate your estimated due date based on your last menstrual period (LMP). This tool also breaks down your pregnancy into trimesters, helping you track significant developmental milestones.
Frequently Asked Questions
Is the due date exact?
No. Most births occur within 2 weeks of the date.
Can my due date change?
Yes. Doctors may update it based on ultrasound.
Is this calculator free?
Yes. Completely free to use.
Does this replace a doctor?
No. Always consult a professional.
Pregnancy Calculator: Estimate Your Due Date Accurately
The Pregnancy Calculator helps you estimate your Expected Due Date (EDD) and track your pregnancy timeline with clarity and confidence. By using medically accepted calculation methods, it provides a reliable overview of your pregnancy progress.
Whether you are planning, newly pregnant, or already tracking milestones, this tool helps you understand what to expect at every stage.
What Is a Due Date?
A pregnancy due date is an estimated date when childbirth is most likely to occur. Most pregnancies last about 40 weeks (280 days). The date is best viewed as a guide rather than a fixed deadline.
Why Track Your Timeline?
- Prenatal appointment planning
- Medical screenings
- Nutrition adjustments
- Emotional preparedness
Calculation Methods Explained
This calculator allows you to estimate your due date using multiple trusted medical methods.
Last Menstrual Period (LMP)
Assumes ovulation occurs ~2 weeks after period start.
Conception Date
Useful if ovulation or conception date is known.
Ultrasound Dating
Based on precise fetal measurements (CRL/BPD).
IVF Transfer Date
Designed for assisted reproduction pregnancies.
Trimester Breakdown
- First Trimester (Weeks 1–12)Major organ development begins. Early symptoms common.
- Second Trimester (Weeks 13–26)Often most comfortable. Growth accelerates, movement felt.
- Third Trimester (Weeks 27–40)Rapid growth. Body prepares for labor and delivery.
Accuracy & Disclaimer
Accuracy: Pregnancy calculators provide estimates. Actual delivery depends on cycle regularity and individual factors.
"Only a small percentage of babies are born exactly on their due date."
This calculator is for educational purposes only. It does not replace professional medical advice. Always consult a healthcare provider.
Supporting You Through Every Step
Pregnancy is a personal journey. Having accurate information empowers you to make informed choices while staying connected to your healthcare provider.