Ovulation Calculator

Planning for pregnancy? Here’s our calculator to help you figure out when you are most likely to ovulate.

Some helpful tips:

The length of your cycle is the number of days between the first day of one period and the first day of the next.

Ovulation is the release of a mature egg from an ovary during the menstrual cycle. The best time to get pregnant is around the time you’re ovulating. This is about 6 days each month, including the day of ovulation and the 5 days before.¹

Ovulation timing may be harder to predict if you have irregular periods – if this is the case for you, talk to your healthcare provider for support and to better determine when you ovulate.

What was the first day of your last period?*

¹ HealthLinkBC. Ovulation and fertility for pregnancy planning.