Track the current gestational week and day from the date of your last menstrual period or a known conception date, with the trimester and the days remaining until your due date. This is an approximate reference, not medical advice; for any health concern or emergency, contact your pediatrician or emergency services, and follow WHO, CDC or your local health authority guidance.
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How to Use the Pregnancy Week Tracker
Choose whether to count from your last menstrual period or a known conception date, enter the start date, then press Track My Week. For the LMP method you can also adjust the average cycle length.
Reading the result
Gestational age is counted from the first day of your last period for the LMP method.
The conception method adds the standard two weeks so the week count matches your provider's.
Weeks and days are shown together, for example 20 weeks 3 days.
Pregnancy is dated in weeks from the LMP even though conception happens about two weeks later.
Features
Works from a last menstrual period or a conception date
Adjusts for average cycle length
Shows the trimester and the days left until the due date
This is an approximate reference, not medical advice; for any health concern or emergency, contact your pediatrician or emergency services, and follow WHO, CDC or your local health authority guidance.
All processing runs locally in your browser. Your data is not uploaded to any server.
An early ultrasound is the most accurate way to date a pregnancy. Use this page as a reference to discuss with your midwife or doctor.