Calculate the best

time to conceive.

With just one click.

Simply enter the first day of your recent period and the length of your menstrual cycle here and our calculator will tell you your most fertile days for the next two months.*



* Important: The fertility calendar is based on straightforward averaging. We strongly advise against using the calendar as a means of contraception.

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My breast is swollen, hot and painful. Why is that?

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Our fertility calendar ...

... for individual calculation of your fertile days.

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All about breastfeeding

Important and helpful tips for giving your child the best start.

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