Fertility Calendar

Select the first day of your period to see which days are the most fertile.

Charting female fertility using an ovulation (or fertility) calculator is a popular and simple method to help determine ovulation. The calculations are based on the number of days in a woman's menstrual cycle and can also be charted by hand using an ovulation calendar.

Because the length of the menstrual cycle is not uniform among women, other methods of charting ovulation, especially observing changes in cervical mucus and monitoring basal body temperature (BBT), are often recommended to supplement the use of the fertility calculator. Since cervical mucus (fluid) changes throughout a woman's menstrual cycle, being aware of its changes can help predict ovulation. The same is true of the BBT. With the use of an inexpensive BBT thermometer, a woman can monitor her basal body temperature and chart the changes to determine her monthly window of fertility.

Fertility charting is a simple way to obtain reliable fertility information and remove some of the guesswork when trying to conceive.

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