The gestational age calculator shows weeks and days pregnant from the first day of last menstrual period to today (or a date you choose)—common obstetric wording.
How to use
- Enter LMP start (estimate from the due date calculator if needed).
- Optionally change the “as of” date.
- Read weeks + days and total days.
Early ultrasound may adjust dating—follow clinical reports. Conception reference: conception calculator.
More tools on the health hub. For planning reference only—not medical, nutrition, or obstetric advice.
Frequently asked questions
How many weeks pregnant am I?
From first day of last menstrual period to today (or chosen date)—shown as weeks + days, common LMP-based obstetric wording.
LMP vs due date?
Often LMP + 280 days ≈ due date (40 weeks)—see the due date calculator. This page shows elapsed gestational age only.
Mismatch with conception calculator?
Conception uses ~14-day or 266-day shortcuts; gestational age counts from LMP—compare on the conception calculator.
Prenatal visit schedule?
We show gestational age numbers only—not a visit checklist. Follow your clinic’s schedule.
Is this medical advice?
No—results are for planning reference only. See clinicians for pregnancy, pediatrics, cycle disorders, or sleep conditions. Do not rely on calendar math alone for contraception.