Pregnancy Week Calculator
Find out exactly how many weeks pregnant you are today and see your progress.
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Current Pregnancy Progress
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Your baby is currently about the size of a Sesame Seed. Keep up your prenatal vitamins and stay well hydrated.
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How This Calculator Works
Measures current progress from LMP, translating elapsed days into complete weeks, percentage complete, and current fetal milestone sizing guides.
Pregnancy Week Tracker & Milestone Calculator
Calculate exactly how far along you are in your pregnancy journey. Track weeks, trimesters, and approximate baby sizes.
The Clinical Significance of Gestational Weeks
Clinical benchmarks are divided into specific gestational weeks. Knowing your exact week helps schedule prenatal screenings, such as NIPT (non-invasive prenatal testing) at 10 weeks and the fetal anatomy scan between 18 and 22 weeks.
Why Count From Your Last Period?
Counting from the LMP is a universal standard because most women do not know their exact day of ovulation, but can reliably identify the start of their last cycle.
Clinical Standard Reference Guideline:
ACOG Guidelines on Prenatal Care and Milestone Schedules.
Frequently Asked Questions (FAQ)
Q:How are pregnancy weeks calculated?
Pregnancy starts from the first day of your last menstrual period (LMP). You are technically not pregnant during the first two weeks of this count.
Q:When is the heartbeat detectable?
A fetal heartbeat can often be seen or heard via transvaginal ultrasound around week 6 or 7 of gestational age.