The tools you need, the friends you trust

Ovulation Calculator

Trying to Get Pregnant? Track your most fertile days with the Ovulation Calculator.

Get our Free Ovulation Calculator App for:

Google Play
Apple
Ovulation Calculator Home ScreenOvulation Calculator ResultsOvulation Calculator

The Ovulation Calculator can tip the odds of getting pregnant in your favor to help make your baby dreams a reality.

Each month you have a small fertile window, usually 10 to 18 days after the first day of your period. The Ovulation Calculator helps you quickly determine your most fertile days based on the date you provide and your cycle length:

  • Enter the first day of your last menstrual period
  • Enter the length of your menstrual cycle

The Ovulation Calculator instantly determines your 6 most fertile days in the current month and in each of the following 4 to 5 months, giving you a better understanding of your monthly cycle. The results also include the baby’s due date should you happen to conceive during that month.

Whether you’ve been trying to get pregnant for a while or are just starting to think about having a baby, the Ovulation Calculator is a great first step towards your ultimate goal — a baby to love!

What Users are Saying

I got pregnant!! Conception was the exact same day that this app read that I was ovulating. Happy Mother To Be!” – Lady Margarette
“This is an easy way to track my ovulation and periods” – Reneze
“This app is awesome!!! It’s very easy to use and if you want to get pregnant it’s the way to keep track.” – Jacqueline Adap
“Perfect for tracking my fertility! I had trouble understanding when I was fertile, now it’s super easy!” – Leslie Frankie
“Gives you exactly the info you want — no extra fiddly bits. Perfect for baby planning!” – Sarah
Apple StoreGoogle Play

iPhone is a trademark of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.