Use the free ovulation calculator below as a guide to help you track your ovulation.

The Ovulation Calculator helps you determine when you might be ovulating based on information from your most recent period and the length of your cycle. This is an approximate date, and the calculation assumes a regular menstrual cycle.


Looking for a more reliable way to keep track of your ovulation?

OVU Control is the first and only Health Canada approved saliva-based ovulation predictor! Ovu control is a reusable ovulation predictor which gives you real-time results. When instructions are followed, determining fertility through ovulation microscopy has been shown to be 98% accurate.