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Ovulation Calculator Fertility Calendar Predictor

This free ovulation calculator and fertility calendar calculates the day you ovulate,  your fertile days for sexual intercourse, and helps improve your fertility. It will also show you when to expect the first pregnancy signs and symptoms.

If you don't know the length of your menstrual cycle or your luteal phase, you can leave these at their default values (menstrual cycle: 28 days, luteal phase: 14 days). However, it is recommended that you record these as they will help you to more accurately predict your likely ovulatory date.

Want a boy or a girl? Did you know that eating a certain diet PLUS Timing Sex can improve gender selection?  Read more about the "Girl Diet" HERE. Make sure you know whether your menstrual cycles are regular HEREThen choose "boy" or "girl" and follow the instructions. Our calendar follows exactly the Shettles Methods of Choosing the Sex of the Baby. 

In addition to this calendar, there are a variety of ways to help predict ovulation such as with LH ovulation tests (OPKs) or Fertility Monitors. Or, for an off-line version of the fertility calendar, many women have benefitted from the Ovulation Calendar Wheel, a unique and affordable tool that predicts the ovulation date and is adjustable for short or long cycles.

We invite you to join the conversation about using this tool and what has worked for you.