Pregnancy Week Calculator
Calculate current pregnancy week and remaining days based on conception or LMP date
About this calculator
The Pregnancy Week Calculator helps expectant mothers determine their exact pregnancy week and remaining days until their due date. By entering either your conception date or last menstrual period (LMP) date, this calculator provides accurate pregnancy timeline information essential for prenatal care planning. This tool is invaluable for tracking fetal development milestones, scheduling medical appointments, and preparing for your baby's arrival with precise timing information.
How to use
Simply select whether you know your conception date or last menstrual period (LMP) date, then enter the corresponding date in the calculator. The tool will instantly calculate your current pregnancy week, days into that week, and estimated due date. This gives you a complete picture of your pregnancy timeline.
Frequently asked questions
What's the difference between calculating from LMP vs conception date?
LMP calculation adds two weeks to account for ovulation timing, while conception date calculation starts from actual fertilization. LMP is the standard medical approach.
How accurate is the pregnancy week calculator?
The calculator provides estimates based on standard 40-week pregnancy duration. Individual pregnancies may vary, so always consult your healthcare provider for personalized guidance.
Can I use this calculator if I have irregular periods?
Yes, but conception date input may be more accurate for irregular cycles. The LMP method assumes regular 28-day cycles for ovulation timing.