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Period Calculator

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Last Updated on Sep 12, 2024

Period Calculator

Last Menstrual Period:
Menstrual Cycle Length :
How Many Days Did It Last:

Menstrual Calendar

Menstrual Period Calendar

Lmp Date :
Your Cycle :
Period Last Days :

Next Period Begins	Ends	Fertility Begins	Ovulation	Due date (If Pregnant)

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Fertile Days- Medium Chance Of Pregnancy

Ovulation day - Highest Chance Of Pregnancy

Period Days - Probably Infertile
Safe Days- Low Chance of pregnancy

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To embed this on to your site just copy and paste the below code.

<iframe id=mj-period_cal width=500 height=720 allowtransparency=true loading=lazy src="https://www.momjunction.com/period-calculator/?embed_id=1" frameborder=0 allowfullscreen></iframe>

In This Article

Trying to find out when your period is due? Then you should use this period calculator so that you can plan your things better. You can get your personalized menstrual period calendar when you enter your details. This also helps if you are worried about your late period or irregular menses. Why hesitate when you can easily track your periods with this menstrual cycle calculator.

What Is Menstrual Period?

Menstrual period or menstruation is a woman’s monthly bleeding. This happens when you ovulate, and the egg is not fertilized. Therefore, your body sheds the endometrium (the lining of the uterus) causing bleeding. It flows from the uterus through a small cervical opening, and it passes out through the vagina. The bleeding lasts for three to five days. Menstrual period, also known as menses are a part of woman’s normal sexual health during reproductive age.

How To Calculate A Menstrual Cycle And Menstrual Period?

The menstrual cycle begins on the first day of your period. In other words, day one of the cycle is the day one of your period, cycle day two is the second day of your period and so on. In general, bleeding is there for three to five days and differs from one woman to another.

An important point to note is that the cycle begins from the day of your regular bleeding but not spotting. For instance, you started spotting on March 3, but the actual bleeding began a day later. So the first day of your menstrual cycle is March 4. Let’s say you bleed for five days, so, the duration of your menstrual period is five days for the month of March.

Now, if your next period started on April 2, then your menstrual cycle length is the number of days from March 4 to April 1 (a day before your next period), which is 29 days. You should not count the first day of your next period because that day will fall under the next menstrual cycle.

In general, menstrual period is the number of days you bleed regularly and menstrual cycle is the number of days from first day of your last period (LMP) to a day before your next period starts. The average length of the menstrual cycle is 28 days but varies from person to person.

Why Is Menstrual Period Important To Track?

It is important to track menstrual period and the cycle for some reasons. The more you understand about your body and the menstrual cycle, the more quickly you can know if something is amiss. A change in menstrual cycle is often a symptom of a variety of health issues in women.

It is also important to track the menstrual periods if you are planning to conceive or if you are trying to have a safe sex to avoid pregnancy.

The primary goal of tracking your monthly periods is to estimate the length of the menstrual cycle and assume the possible time of ovulation. If you are trying for pregnancy, you can have an intercourse around the ovulation time, and if you want to avoid pregnancy, you should abstain from sex for some days before and after ovulation.

Also when your periods become irregular, or you notice a change in amount and duration of bleeding, it may indicate health conditions such as thyroid issue, hormonal fluctuations, diabetes, liver problems, gaining or losing a significant amount of weight, extreme stress or adopting a new exercise routine. If irregular menstrual periods are coupled with any other symptoms, you should check with your OB-GYN.

What is Menstrual Period Tracker? – Know Your Due Period!

The menstrual period Tracker or calculator takes inputs from user like first day of your last period(LMP) and the average length of your menstrual cycle to estimate your next due period, Fertile Days ,Ovulation day and Safe Days. MomJunction Period calculator predicts the future periods and ovulation phase for a year so that you may plan for a special event that is period-free.

How To Use Menstrual Period Calculator?

It is quite simple 3 step process to calculate your next period and your menstrual cycle using MomJunction period calculator. Also, download customised menstrual calender for year.

Enter the first day of your last menstrual period.
Enter the average length of the menstrual cycle.
Average duration of the last period.

Once you share all the above information,period calculator will share your following menstrual date for a year, fertility calendar, ovulation phase, fertile phase and estimated due date.

Frequently Asked Questions

How to track your period manually? ‹All you need to have is a calendar to track your periods manually – a paper one or the one on your mobile or a computer.
1. Note the first day of your last menstrual period as day One.
2. Count the days in between before you start another period. Or you can just count 28 days.
3. Mark the last day that is when you are supposed to start your next period.
4. After a couple of months of marking likewise, you will be then able to figure out the actual menstrual cycle length, and you can calculate accordingly.
Another way is to keep track of the physical signs you experience in a period. Cramping, breast tenderness, white discharge are some of the common symptoms. The next time, when you start to experience such symptoms, you should be aware that your next period is going to start.
Emotional changes is another way to track your period manually. The fluctuating hormones alter your emotions such as feeling depressed, anxious or irritable for no apparent reason.
Difference between Menstruation and Menstruation Cycle? ‹
When a woman menstruates, her body discards the lining of the uterus. The blood flows from the uterus through a tiny opening, passing out the blood through the vagina. This is called menstruation.
A menstrual or period cycle is calculated from the first day of the period to the first day of the next period. An average menstrual cycle is 28 days long, but some women may have longer or shorter cycles. It can range from 21 to 35 days in adults and 21 to 45 days in teens.
What factors may affect a woman’s menstrual cycle? ‹
Several factors influence the date and flow of period. They include:
1. Diet And Exercise:
Exercise and diet can affect your period and your chances of pregnancy. If you are training for an athletic event and are not eating properly, your estrogen levels can drop, halting your period.
2. Weight:
Being too thin can also delay your periods, making your body think that you are not healthy enough for bearing a child. If you are overweight, excessive estrogen could build in your body, causing heavy or irregular periods.
3. Stress And Lifestyle:
Stress can mess badly with your cycle. Lifestyle habits like drinking and smoking can cause irregular periods.
Can you speed up your menstrual cycle? ‹Here are a few ways to accelerate your menstrual cycle:
1. Take contraceptives on a regular basis. It can effectively regulate your menstrual cycle.
2. Some doctors recommend hormone injection to stimulate your menstrual cycle.
3. Sexual activity increases the blood flow to the genitals, stimulating the uterus to contract.
4. Eat high levels of vitamin C rich food. Vitamin C rich foods produce estrogen in the body and build the uterine lining, contracting the uterus and causing menstruation.
How to find the safest days to have sex based on the period calculator to avoid pregnancy? ‹
Calculating the safe period days is simple. You have to fill in the dates of your last period, duration of your period and the duration of the menstrual cycle. And your data is ready for the next few months! The dates with white spaces in the calendar (given below the calculator) are the safe days. Generally, one to seven days of the menstrual period, and the days after ovulation are considered safe or infertile. However, remember that the calculator is purely based on the details you give, and can be inaccurate if the data is incorrect. Keep in mind that sometimes ovulation can happen early or late. In such a case, prediction of safe days may be inaccurate.
What to expect from MomJunction’s Period Calendar? ‹
MomJunction’s period calendar requires you to input the date of your last menstrual period date to calculate your monthly period. The date here refers to the starting date of the last period cycle, not the ending one.
The second input requires you to give the average length of time between your periods. Since the term varies from person to person, it’s not wise to assume the figure. You must be as accurate as possible to determine your most fertile days if you are planning to conceive.
Once you’ve shared the inputs, the period calculator will show you the result. It won’t just give you a heads up on your next period start date for the next 12 cycles, but will tell you about your most fertile days and if you are late for your period cycle. Even if your period is delayed, you will know the next expected date of your period. This way, you can keep a track of the length of your menstrual cycle and the number of days it lasted.

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Disclaimer: The period calculator provides the approximate dates by considering your regular menstrual cycle. If your menstrual cycles are irregular, the tool may have trouble pinpointing your day of ovulation or period. While period calculators are not 100% accurate, the menstrual cycle is still a very useful tool. MomJunction is not responsible for any associated deviations, failures or liabilities.
Do you have any question about the period calculator, menstrual cycle or any other related topic? Ask us in the comment section below!

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