Pregnancy Due Date Calculator
Calculate Your Due Date
About the Pregnancy Due Date Calculator
This calculator estimates your baby's due date based on the first day of your last menstrual period. It uses the standard Naegele's rule, which adds 280 days (40 weeks) to the first day of your last period.
How to Use:
- Enter the first day of your last menstrual period
- Enter your average cycle length (default is 28 days)
- Click "Calculate Due Date" to see your results
What is a Pregnancy Calculator?
A pregnancy calculator (or due date calculator) is a free online tool that estimates your baby's due date, gestational age, and key pregnancy milestones based on the first day of your last menstrual period (LMP) and your average cycle length. It helps expectant parents track pregnancy progress, plan prenatal care, and understand important dates throughout pregnancy. This tool uses standard medical formulas for accuracy and is suitable for anyone seeking to estimate their due date quickly and easily.
A pregnancy calculator estimates your due date and gestational age based on your last menstrual period and cycle length. It's a helpful tool for tracking pregnancy progress and planning prenatal care.
It uses Naegele's rule, adding 280 days (40 weeks) to the first day of your last period, and adjusts for your average cycle length to provide a personalized estimate.
Gestational age is the number of weeks and days since the first day of your last menstrual period. It's used by healthcare providers to track pregnancy progress and schedule prenatal care.
This calculator uses standard medical formulas and is accurate for most pregnancies, but your healthcare provider can give the most precise estimate based on ultrasounds and exams.
Yes, due dates can also be estimated by ultrasound measurements, conception date, or embryo transfer date (for IVF). This calculator provides a quick estimate based on LMP and cycle length.