Pregnancy Calculators: Free Due Date & Trimester Tracking Tools

Navigate your pregnancy journey with our free online pregnancy calculators. Whether you need to estimate your due date from your last menstrual period, calculate your conception window, track weekly fetal development milestones, or monitor healthy weight gain by trimester, these tools deliver personalized, medically-aligned results instantly. Enter your LMP date, cycle length, or ultrasound measurements to receive gestational age, trimester boundaries, fetal size comparisons, and prenatal appointment schedules. Each calculator includes IVF and embryo transfer date adjustments, multiple pregnancy modifications, and trimester-specific nutrition and screening reminders aligned with ACOG and WHO guidelines. Expectant mothers, partners, and healthcare providers use these tools to anticipate key milestones, prepare for prenatal visits, and celebrate each week of fetal growth. From conception prediction to labor countdown, our pregnancy calculators support every stage of your maternity journey. No signup required—access from any device and embrace your pregnancy with confidence.