Ovulation Calculator

Plan your pregnancy with our Ovulation Calculator & Calendar. Know your most fertile days and boost your chances of conceiving.

Please select the first day of your last menstrual period:
Usual number of days in your cycle:
28 Days
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Also Use: Due Date Calculator, If you want to know when your precious is coming.

Also Use: Safe Days Calculator, If you want to have sex, but don’t wish to get pregnant.

  • Pregnancy is highly valued as an auspicious event as it is the creation of life and the wonder of the universe. It’s a very bright event as it brings us a tiny little human which can light up the whole house with playfulness, mischievousness, and even by mere presence. But the problem is pregnancy happens only when intercourse happens during the ovulation period.

  • Ovulation is the period during the menstrual cycle of women where the mature egg is released from the ovary. In this article, you will know about increasing your chances of getting pregnant based on the calculation of ovulation and fertile windows.

What is an ovulation period?

  • It is critical to know that this percentage is actually pretty high, considering you can only get pregnant in your ovulation period. Ovulation time is a short period each month when the egg is viable to be fertilized. This lasts between 12 and 24 hours. On the other hand, sperm can live longer than the egg, from three to six days. Logically, this means that sperm basically hangs around for an egg to emerge before it goes down the fallopian tube. 

  • The menstrual cycle varies from 23 to 35 days, 28 being the average length. If you happen to have irregular menstrual cycles, calculating might be a little bit more complicated. I suggest considering your shortest period to be sure not to miss your ovulation date.

  • Making love to your significant other on the day you ovulate is, of course, an ideal scenario. After all, after that day, the window closes until the next cycle. If you wish to get pregnant, it would be great to learn to recognize ovulation signs. Good news; you can calculate your fertile window in your monthly cycle you have the best chances to conceive. 

What is ovulation?

  • Ovulation is the process of releasing a viable egg from the ovaries. This process typically occurs somewhere around halfway through the menstrual cycle. Usually, this happens around day 13 of the average 28-day cycle, counting from the first day of one period to the next. 

  • Many women don't have an average monthly cycle, so there is a wide range of "normal" when it comes to the menstrual cycle. They can last from 23 to 35 days. The critical thing to know is that even your cycle and ovulating time may vary slightly from month to month. 

  • To calculate your ovulation days, take the length of your menstrual cycle and subtract 14 days from the end of your current menstrual cycle to determine the approximate day of ovulation.

How long does ovulation last?

  • The specific time it takes for a fertile egg to be released by the ovary into the fallopian tube varies but typically occurs somewhere between 12 to 24 hours after being supported by a surge of hormone LH. 

  • Your body produces and distributes an increased amount of the hormone estrogen as you approach your ovulation period. This vital hormone is responsible for the lining of your uterus thickening. It also helps create a sperm-friendly environment to increase your chances of you becoming a new mom. Increased estrogen levels cause a sudden increase in the hormone LH (luteinizing hormone) which causes the release of the matured egg from the ovary. And that's it. The ovulation typically occurs 24 to 36 hours post-LH surge. Hence why the sudden rise of this hormone serves as a solid sign of peak fertility. 

  • A viable egg is good to be fertilized for up to 24 hours after ovulation happens. If it doesn't stick, the lining of your womb sheds, and you get your period and start a new menstrual cycle. 

Also read: Can Female Masturbation lead to Infertility?

How long does ovulation last

What is the difference between ovulation days and fertile days?

  • As previously mentioned, an egg can survive for up to 24 hours, while sperm can remain active for as much as five days. That means you can get pregnant if you have sex somewhere around four to five days before the egg is released. So, the fertility window is about six days in which you can conceive. If you have unprotected sexual intercourse, of course. The chances of getting pregnant outside of this fertility window are pretty low. 

  • Knowing the exact days when you are most likely to get pregnant gives you more opportunities to plan sex with your partner. This flexibility will significantly reduce the pressure you might be feeling. 

Signs of Ovulation 

If you know the signs of ovulation better, you can handle your pregnancy preparations well. These are three common methods to track ovulation,

  • Ovulation Predictor Kit

The ovulation predictor kit basically tests your urine for the presence of the Luteinizing hormone (LH) and gives a positive result if LH levels are high (ovulation increases the level of LH). You can have sex with your partner after three days of receiving positive in the test kit. This increases your chance of getting pregnant.

  • Basal Body Temperature

You can also check your basal body temperature every morning to know your ovulation status. Whenever your ovary releases the eggs, the body temperature dips for some time and then rises again. A women’s basal body temperature right after ovulation changes to 36.4 and 37º Celsius.

  • Changes in Cervical Mucus

You can also check for changes in the cervical mucus, for their appearance and consistency. Just before ovulation, when the woman is most fertile, the secretion of mucous increases. It becomes thinner, clearer, and more slippery as you become nearer to your fertile days.

Also read: Ovulation Symptoms: Ovulation signs & When Do You Ovulate?

What is Fertile Window?

Contrary to the popular belief, you can’t get pregnant every day of your cycle. There are only 6 fertile days in every cycle where you would be able to conceive. These fertile days are collectively called the ‘fertile window’. The chance of getting pregnant is very high these days.

Myths and Misconceptions 

As with many things in life, myths and misconceptions are present in the fertility department. I will mention the most common ones, as well as the fundamental truths.

Ovulation Calculator myths and misconceptions
  • You cannot conceive the first time you have sex:

This is not true. The possibility of getting pregnant is always there if you have unprotected sex. If you don't wish to have a baby, choose a contraception method that suits you best. 

  • You can get pregnant on any day during the month:

This is also untrue. You can get pregnant if you have unprotected sex on the days leading up to and around your ovulation day. You should know that the day before, and the ovulation day, are your two most fertile days. Once your viable egg is gone, you cannot get pregnant until your next menstrual cycle. 

  • You can only conceive on the two days each cycle:

This is another common myth responsible for many surprising pregnancies. The "fertility window" lasts for up to six days. As already explained, sperm can live for up to five days, so having sex on the days approaching your ovulation day might increase your chances to conceive

The ovulation calculator is a great help

  • Calculating by yourself is okay, but nowadays, there are ovulation calculators available. Those really come in handy since menstrual periods are different from woman to woman and month to month. Our ovulation calculator will help you determine your most fertile days. You will also get an estimated window of days in your cycle you are most likely to get pregnant. 

  • It is an excellent tool that helped many couples reduce the pressure and anxiety when trying for a baby. And the less stress, the more chance you succeed in adding the sweet new member to your family.

What is an Ovulation Calendar and How does it work?

An ovulation calendar, also known as a fertility calendar or a menstrual cycle tracker, is a tool that predicts ovulation days based on a person's menstrual cycle. It assists those who are attempting to conceive or who want to avoid pregnancy by pinpointing the most fertile days in their cycle. The calendar predicts when ovulation, or the release of an egg from the ovary, is expected to occur by monitoring the start and end dates of menstrual cycles.

You can use an ovulation calendar to find out your most fertile days. Keep in mind that your menstrual cycle doesn’t just include the days where you experience bleeding. Your menstrual cycle begins on the first day of bleeding and concludes the day before your next period starts. Calculating the optimal timing for ovulation can be difficult, especially if your menstruation is irregular.

To determine your ovulation timing, you must first determine the average length of your menstrual cycle. To do so, keep track of your following three menstrual cycles. Begin counting the days between the first day of bleeding (the start of your period) and the first day of your next period. After three months, add those three numbers and divide by three. That is the typical length of a menstrual cycle for you.

The next step is to identify your most fertile days. Ovulation occurs 14 days before your period begins.

Some advanced ovulation calendars may also consider additional fertility indicators, such as basal body temperature (BBT) tracking and cervical mucus changes, to enhance accuracy.

Tips for Getting Pregnant 

These are some of the effective tips to get pregnant,

  • Record Menstrual Frequency

If you are preparing for a baby, you must focus on recording the menstrual cycle length every day. If the cycle is regular, you can track the fertile window from the ovulation calculator. It is said that a woman's egg is fertile for about 12 hours and sperm can be alive for up to 5 days.

  • Monitor Ovulation

Women with regular periods have ovulation two weeks before the actual menstruation. When you track your cycles, you will know the ovulation period and hence you can prepare well for the baby.

  • Have Sex Every Day During Fertile Window

You should have consistent sex throughout the fertile window for increasing the chance of getting pregnant. Many pieces of research indicate that morning sex is always better as the sperm count is somewhat more during the morning hours.

  • Strive for Healthy Body Weight

Having a healthy weight is highly necessary for increasing the chances of getting pregnant. The excess body fats produce high levels of estrogen which can disrupt the fertilization of eggs and sperm.

  • Take a Prenatal Vitamin

Being deficient in essential vitamins like folic acid can reduce the chance of fertilization. So, get checked for that before trying to get pregnant and if you’re lacking it, you can have supplements.

  • Eat Healthy Foods

Having healthy foods is very essential for the nourishment of the body. Fill your plate with fruits, vegetables, and nuts – cut down the saturated fats and hydrogenated oils.

  • Avoid Strenuous Workouts

Though physical activities are highly necessary for maintaining good health, too much of it is not a good idea. Those who want to get pregnant must avoid strenuous workouts as it disrupts their menstrual cycle.

  • Quit Smoking and Drinking

Drinking and smoking hurt your health and can even make you impotent in the long run. Both are blamed for causing sperm degeneration in men and infertility in women.


Frequently asked questions