Ovulation Calculator: Free Fertility Calculator

Now an ovulation calculator is basically, exactly what it sounds like. It calculates ovulation for you, thus, taking out all the hard work.

When do you ovulate?

So, typically, a textbook cycle is 28 days, and you subtract back about 14 days, to show that you ovulate on cycle day 14. Women will ovulate once per monthly cycle, roughly mid-way through their cycle. Knowing when you ovulate is a key component in getting pregnant fast, as your fertile window is only a few days surrounding your ovulation date. Even if you have intercourse all throughout the month, if you miss these few days around the day you ovulate, you will never fall pregnant. Claim Your 20 Free Ovulation Tests – Click Here

Not every woman has a luteal phase of 14 days – luteal phase being from the time of ovulation to the start of your next cycle. The luteal phase can range anywhere from 12-16 days. I personally have a longer one. My average is sixteen days. So I would subtract sixteen days from the last day of my cycle, rather than the average 14 days. Now, if all of this sounds like more trouble than you really want to go through, then you want to try the ovulation calculator.

Here is how it works

It is really quite simple. There are only two things that you need to have. You need to know the first day of your last period, which mine was June 6, and then you need to know your average cycle length. Now mine is 31 days. This would be the average length from Day 1 of your period until your next period begins. For the average woman, this would be 28 days. Average cycle length can vary though, and range from 25-41 days or so. Take a look at your calendar and note how long your average cycle is. So when I go to plug in this information, it tells me what my fertile days are, and if I conceive, what my due date would be. Now my fertile days would be June 20 through June 25 resulting in a possible baby birthday of next year at or around March the 16th. A possible St. Patrick’s Day baby!

Guess your due date!

Now remember, this is just an estimate of your fertile days and just an estimate of the due date if you had conceived that month. So it really helps in not only helping you find out your fertile days, and knowing when intercourse could result in a pregnancy, but also if you’re wanting to plan your baby’s birthday in a specific month, this could help you with that as well. However, keep in mind, it’s an estimate and even if you did conceive, or somebody in my position conceived this cycle, and end up with a March due date, the baby still could come in February or April because some babies really like to pick their own birthdays coming early or late. All three of mine personally came three weeks early.

So that’s all you need. First day of your last period and then your average cycle length. Have fun!

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Lucy Eades
Lucy Eades | ConceiveEasy
Lucy is a mother of three, who’s passionate about all things AP parenting. When she’s not busy giving tips on keeping babies healthy & happy, you can find her blogging on her popular YouTube channel