Pregnancy Calculator

Calculate your estimated due date (EDD), current gestational age in weeks and days, trimester, days remaining, and estimated conception date. Enter your last menstrual period (LMP) or ultrasound gestational age — essential for expectant parents tracking milestones week by week.

Pregnancy calculators have exceptional emotional intent and dwell time. Users return weekly to check progress, share countdowns with family, and prepare for trimester-specific appointments and tests.

Uses standard Naegele's rule: LMP + 280 days (40 weeks) for due date. Gestational age mode back-calculates from ultrasound measurements when your doctor gives "22 weeks 3 days" instead of a known LMP.

Only about 4–5% of babies arrive on the exact due date — treat EDD as a two-week window (38–42 weeks). First pregnancies often run slightly longer; multiples often arrive earlier.

Not medical advice — confirm dates with your OB/GYN or midwife, especially with irregular cycles, IVF, or early ultrasound dating.