Find out how far along you are in your pregnancy and get your estimated due date, calculated from your last period or date of conception.
This tool provides an accurate estimate of your gestational age. By using either the first day of your last menstrual period (LMP) or your date of conception, it calculates your progress in weeks and days, along with your estimated due date.
Note on Calculation: The standard medical practice is to count pregnancy from the first day of the LMP, as the exact date of conception is often unknown. This method assumes a 40-week pregnancy.
Maintained by Live Fitness Check. Last updated: August 9, 2026. How we test our calculators .
Estimates current gestational age in weeks from the selected dating method.
The calculator calculates elapsed gestational time from the selected reference date and reports the estimated pregnancy week. The calculation uses last menstrual period or conception-date information.
Last-menstrual-period and conception estimates may differ from ultrasound-based obstetric dating. Use the number as an estimate and consider professional advice when the result may affect health, treatment, pregnancy, nutrition, exercise safety or another important decision.
