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Pregnancy Due Date Calculator - Estimated Delivery Date | FusioFiles

Find your estimated due date based on your last menstrual period (LMP) and cycle length. Track your pregnancy progress week by week.

Your Dates

Note: This calculator uses Naegele's Rule. Only an ultrasound can confirm the exact gestational age.

Pregnancy Calculator

Enter the first day of your last period to calculate your due date.

Calculate Your Estimated Due Date

Find your estimated due date based on your last menstrual period (LMP) and cycle length. Track your pregnancy progress week by week.

1

Enter LMP

Select the first day of your last menstrual period on the calendar.

2

Cycle Length

Enter your average cycle length (usually 28 days).

3

View Timeline

See your estimated due date and current pregnancy progress.

Our Pregnancy Due Date Calculator uses Naegele's Rule to estimate your delivery date. By entering the first day of your last period and your average cycle length, we can calculate your baby's due date, conception date, and current gestational age (weeks and days pregnant).

Key Features

Custom Cycle Length

Adjusts calculations for cycles shorter or longer than the standard 28 days for better accuracy.

Pregnancy Timeline

Shows your current trimester, weeks pregnant, and progress towards your due date.

Key Milestones

Identifies important dates like the end of the first trimester and full term.

Frequently Asked Questions

This calculator provides an estimate based on the standard 40-week gestation period. Only about 5% of babies are born on their exact due date.

It's the standard method used by doctors to estimate a due date: Add 7 days to the first day of your LMP, then subtract 3 months.

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