What is the Pregnancy Week Calculator?
Pregnancy is counted from the first day of your last menstrual period (LMP), about two weeks before conception. Enter your LMP, conception date or an ultrasound result to see exactly how far along you are, your trimester, estimated due date and a fun comparison of your baby’s size this week.
How to use the Pregnancy Week Calculator
- Choose the method (LMP, conception or ultrasound).
- Enter the date (and ultrasound weeks if used).
- See your week, trimester, due date and milestones.
Important
Only about 4% of babies arrive on the due date – most come within two weeks either side. Always follow your doctor or midwife’s dating.
This Pregnancy Week Calculator is 100% free, needs no signup and runs privately in your browser – on phone, tablet or computer.
Last updated: · By NodifyTech