Pregnancy Due Date Calculator is an essential online tool that estimates when your baby is expected to arrive based on your last menstrual period (LMP) or conception date. This calculator uses the standard medical formula of adding 280 days to your LMP date or 266 days from conception to provide your estimated due date.
The pregnancy due date calculator works by taking the first day of your last period and counting forward 40 weeks, which represents the typical length of pregnancy. Most calculators also allow you to input your average cycle length to provide more personalised results, since not everyone has a standard 28-day cycle.
Beyond just calculating your due date, modern pregnancy calculators provide comprehensive information, including your current pregnancy week, trimester status, probable conception date, and important milestone dates like optimal timing for nuchal translucency scans (11-13 weeks) and morphology scans (19-22 weeks). Many tools also show your pregnancy progress as a percentage and days remaining until delivery.
It’s important to remember that only about 4% of babies are actually born on their estimated due date, with 60% arriving within a week and 90% within two weeks of the predicted date. While pregnancy due date calculators provide valuable estimates for planning purposes, your healthcare provider’s assessment based on ultrasounds remains the most accurate method for determining your baby’s arrival date.
This calculator serves as a helpful planning tool for expecting parents to track their pregnancy journey and prepare for their baby’s arrival.
Pregnancy Due Date Calculator