Are you trying to conceive? You only have a small window each month to get pregnant. Increase your chances by working out your most fertile time each month with our ovulation calculator. Simply put the date of the first day of your period into our ovulation calendar to work out when you are most likely to be ovulating.

If you're not sure how ovulation works and want some more information, here's the basics on ovulation and some tips on how to chart your ovulation .

(dd/mm/yyyy or click in field to display calendar)

Luteal phase of your cycle should be at least 4 days less than your menstrual cycle.

Get a more accurate result

Our Ovulation Calculator provides approximate dates for predicting ovulation as there are several variables that can cause cycle irregularities.

If you have any feedback on our tools, we'd love to hear from you - please email our editor.