Ovulation Calculator
Find out when you are most likely to ovulate to increase your chances of getting pregnant. Most women have a 28- to 32-day cycle. Ovulation usually takes place between days 11 and 21 of the menstrual cycle (the first day of your last period is counted as day 1). Tell us the day you last started menstruating and how long your cycle usually lasts and we'll give you an estimate of when you are most likely to ovulate.
Please enter the following information:
Average length of menstrual cycle:
How many days were there between the first days of your last two periods?
First day of last period:
When was the first day of bleeding for your last menstrual period?
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Calculate
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Start an Ovulation Tracker to know your ovulation window!
Track signs of ovulation to help you determine your fertile window, when you're most likely to conceive. Get started! >
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