EasyCalculators.info - Due Date Calculator

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Due Date Calculator

Estimate your pregnancy due date based on different methods

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.

Modify the values and click the Calculate button to use

Estimate Based On:

First Day of Your Last Period:

Average Length of Your Cycles:

Your Estimated Due Date

January 1, 2023

40 weeks from April 10, 2022

Current Status

You are approximately 0 weeks and 0 days pregnant.

This due date is an estimate based on your input. Only about 5% of babies are born exactly on their due date. It's normal for babies to be born within 2 weeks before or after the estimated date.

Important Dates

First Trimester:	Apr 10 - Jul 2, 2022
Second Trimester:	Jul 3 - Sep 24, 2022
Third Trimester:	Sep 25, 2022 - Jan 1, 2023

Other Milestones

Viability (24 weeks):	Sep 24, 2022
Full Term (37 weeks):	Dec 10, 2022
Late Term (41 weeks):	Jan 8, 2023

About Due Date Calculation

How Due Dates Are Calculated

Due dates are typically calculated using several methods:

Last Menstrual Period (LMP): The most common method adds 280 days (40 weeks) to the first day of your last period. This assumes a 28-day cycle with ovulation on day 14.
Ultrasound: Early ultrasounds can accurately date a pregnancy by measuring the embryo or fetus. This is often considered the most accurate method.
Conception Date: If you know when conception occurred, the due date is calculated by adding 266 days (38 weeks) to that date.
IVF Transfer: For IVF pregnancies, the due date is calculated based on the transfer date and the age of the embryo at transfer.

Why Due Dates Matter

Due dates help healthcare providers track your baby's growth and development, plan appropriate prenatal care, and make decisions about labor and delivery. However, it's important to remember that only about 5% of babies are born exactly on their due date.

Factors That Can Affect Your Due Date

Irregular menstrual cycles
Late or early ovulation
First-time vs. subsequent pregnancies
Maternal age
Family history

Note: This calculator provides estimates only. Always consult with your healthcare provider for the most accurate due date and personalized pregnancy care.