The calculator estimates your due date by adding 280 days (40 weeks) to the first day of your last menstrual period (LMP). This is the standard method used by doctors.

The calculator gives an estimate. Actual due dates may vary based on ovulation, cycle length, and ultrasound measurements. Always consult your doctor for medical accuracy.

Pregnancy is divided into three trimesters: 1st (weeks 1–12), 2nd (weeks 13–27), and 3rd (weeks 28–40). Each stage comes with different developments and symptoms.

It’s best to schedule your first prenatal visit around 8 weeks of pregnancy, or as soon as you know you are pregnant. Regular checkups help monitor your health and your baby’s growth.