Ovulation and Safe Period Calculator.

An ovulation calendar or fertility calculator is a tool used to help track a woman's menstrual cycle and identify the times when she is most likely to conceive a baby. It works by estimating the dates of ovulation, or the release of an egg from the ovaries, and provides information on when a woman is at her most fertile. The calendar calculates the safe period, which is the time during a woman's menstrual cycle when she is least likely to become pregnant. By using this tool, women can plan their pregnancy or avoid pregnancy altogether.