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March of Dimes ovulation calendar helps how to calculate the fertile days of your cycle to increase your chances of getting pregnant.

Ovulation calendar

Fill out the form to find out when you're ovulating. Then click on any date to edit your calendar or add notes. Sign in or sign up to save your calendar and get alerts.

Your ovulation date

First day of last period:
Cycle length:

Cycle length

Your cycle length is the number of days from the first day of your period to the first day of your next period. The average cycle length is 28 days.
Period length:

Period length

Your period length is the number of days your period lasts. For most women, this is between 3 to 5 days.
Intercourse
Ovulation
Your fertile days will be automatically updated
BBT
(Basal body temperature)
My note
Sign in or Sign up for enhanced features and to save your calendar.
Period Intercourse Fertile Ovulation BBT Note

Period

The bleeding you have at the end of your cycle. If you get your period, you're not pregnant.

Intercourse

The days on which you and your partner had sex - you may have conceived your baby!

Fertile

Your fertile days are the days before and right after ovulation - when you're most likely to get pregnant.

Ovulation

When you ovulate, an egg is released into the fallopian tubes. Conception can now occur.

Basal body temperature

Take your temperature at the same time every morning and add it to your calendar. You should see a rise in temperature a day or two after you've ovulated and may be able to better predict your next ovulation.

Note

Keep track of doctors' appointments, medications you're taking, symptoms you're experiencing or anything else you want to remember.

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