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Ovulation Calculator

Our free online Ovulation Calculator uses your information to generate charts to help you get pregnant.

For more information on how to become pregnant see How do I tell if I'm ovulating?
Start your own pregnancy diary here.

During ovulation, an egg is released from one of your ovaries and travels down the fallopian tube. At this time you are most fertile and likely to conceive when intercourse takes place. Once you know the length of time between the start of one menstruation cycle and the next, put that information into our Ovulation Calculator. Then it's up to you! If it's not working, seek professional medical advice.

You can use the scroll bar at the bottom to see your predictive chart and you can print it out using the green arrow and then the print icon at the top left of the expanded chart.

Menstruation
"Safe" Days: Lowest chance of pregnancy days calculated from your information.
Fertility: Highest chance of pregnancy days calculated from your information.
Ovulation: Likely ovulation days.
Conception Boy: Highest chance to get pregnant with a Boy.
Conception Girl: Highest chance to get pregnant with a Girl.

Work out your cycle, then enter your details:

Enter your details
tooltip First day of last cycle:  
tooltip Cycle Length Days
tooltip Menstruation Days

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