Pregnancy Calendar is a free online tool that helps you estimate your pregnancy due date based on the first day of your last menstrual period (LMP) and it is a week-by-week guide to pregnancy.

Know your baby's blood type. Do you want to know your unborn baby’s blood type? Child Blood Type Calculator can help you discover it!

Predict your child's adult height. Child Height Prediction Calculator is a free online tool that helps parents predict the height of their child based on the height of both parents.

Female Menstrual Cycle Period Calculator. Menstrual Cycle Calculator is an online tool that can help you keep track of your menstrual cycles, predict your next periods, and identify your fertile days. It could help you understand more about your body and health by providing information about the phases of your cycle, the signs of ovulation, and the factors that can affect your cycle.