CycleCalculator is a menstrual cycle calendar. The software indicates days with increased probability of getting pregnant and makes predictions of upcoming dates. During each menstrual cycle, a woman's ovaries release an egg. This process is called ovulation. This typically takes place an average of about 14 days before the start of a woman's monthly period. After ovulation the egg moves toward the uterus through the fallopian tubes, where fertilization takes place. An unfertilized egg may live for about 24 hours. The Cycle Calculator uses the day of your last menstrual bleeding and the average number of days in menstrual cycle to indicate days with increased probability of getting pregnant. The Cycle Calculator is extremely practical and user-friendly. Just tell the Cycle Calculator the day of your last menstrual bleeding and the average number of days in menstrual cycle. Enjoy!