Ovulation Calculator Tool

Understanding when you ovulate can make it easier to plan for pregnancy. Our ovulation calculator uses the date of your last period and the length of your menstrual cycle to estimate when you may release an egg and which days you’re most likely to conceive. Because the fertile window typically includes the few days leading up to ovulation and the day it occurs, timing can make a meaningful difference when trying for a baby.

This calculator should be used as a guide only, and relies on your cycle being a regular length each month. For more tips on tracking your cycle read our blog Ovulation Tracking Tips