How to Use Period Calculator

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Are you having problems determining the dates for your monthly period? If so, you should know that a period calculator will help you to estimate the date for your next menstruation. This calculator can give estimated details including the starting dates for your periods over the next twelve months or the next year.
You might be thinking that you don’t need to know your period date for every month, but imagine how this information will come in useful if you are actually planning to conceive. The calculator is very simple to use. You are only required to input the starting date for your last period, in addition the average length of your menstrual cycle.

Please select the first day of your last menstrual period:

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Usual number of days in your cycle:

A calendar can be used to keep a track of your monthly periods, so this is a good way to know the first and last days. As for the length of your average cycle or period cycle, this would be the time length in days, starting from Day 1 of a menstrual period and ending at Day 1 of the other. A normal menstruation period can take 2 to 7 days.

After entering the required information, the calculator will present the dates in no time without any hassles!

Menstrual Cycle

Most couples have a hard time when trying to conceive naturally, with some taking about one year. If you can relate to this, then you need to take time to understand menstrual cycle as well as the calendar for ovulation as this can improve your chances of conceiving. Knowing your menstrual cycle will help you to ascertain your ovulation days more accurately.

There are three phases in the menstrual cycle: the follicular, ovulation and luteal. The period for ovulation will be your most fertile time and this will occur about 10 to 12 hours after a LH surge. The length of your menstrual cycle is the number of days that the cycle lasts, which is different from the length of your period. The day when your period begins is cycle day; the beginning of a brand-new menstrual cycle.
On average, 28 days is the length for a woman’s menstrual cycle and the period length is 3 to 5 days. However, this is not the case for everyone as some have longer or shorter cycles which can vary monthly by a few days.
To calculate the length of your menstrual cycle, you can count the days from the first day of your period and go up to the day prior to the start of your next period. In turn, the average cycle length can be calculated by adding the length for each individual cycle and then divide by the overall number of cycles.

Ovulation

Ovulation occurs whenever the ovary releases a mature egg into your fallopian tube in preparation for fertilization. If you have been trying to conceive without success, then it is very important to understand your ovulation and menstrual cycle. Knowing this will help you to predict your most fertile days. An ovulation calendar is a proficient tool that can help you to ascertain your ovulating days.

With the help of an ovulation calendar, you can calculate the days when conception is most likely to occur. This calendar can be supported by an ovulation kit as it offers a great way for you to double check the high fertility days.
The ovulation calendar calculates the odds of conceiving by using a method that is based on the ovulation period as well as other factors such as the life expectancy of the egg and sperm. It will provide information that is even more accurate if you know the length of your menstrual cycle. A simple way to determine this is to track the number of days in your cycle, for around 3 to 4 months. You could have the regular 28 day cycle like most women, or it can vary between 29 and 32 days.

Calculating Due Date

When you get pregnant, you might be anxious to know your due date, just like every other expecting mom. In this case, a due date calculator will come in really handy. This tool will use the first day of the last period in order to calculate when you will give birth. It also uses the estimated time for your ovulation to determine when your baby will be born.

All you have to do is type in the exact date for the first day of the last menstrual cycle and the amount of days that your cycle normally runs. After that, you will receive an approximate date for the time when you will give birth. Note that the calculator will only give an approximate date based on the forty week calendar that is used for normal pregnancies. Furthermore, the result will be based on any data that you give. The predictions from these calculators are 80% accurate, so this is something that you need to keep mind. Of course, the real due date will still be dependent on the time when your baby is well good and ready to be born.

272 thoughts on “How to Use Period Calculator

  1. chelsea

    hello. my last menstrual period was august 26, we had an intercourse a week after my period . im expecting to have my period last september 25 but im delayed for a week now. how many percent of chances for me to conceive? is it necessary for me to do the test now?

    Reply
    1. Clepetark

      Hi,
      odds are very minimal as it was a way too early into a normal cycle to conceive… but nature taught us that nothing is impossible, in the case by example of women having 2 distinct ovulations in the same month… A lot of factor in our lives can delay the periods to starts such as stress, new job, sleeping disorder or even a new gym routine. The only way to get a straight answer on are you pregnant or not will be to test yourself. the pee on a stick test need 14 days after the unprotected intercourse to trigger positive, earlier than that you might have a false negative.

      Good luck !

      Reply
  2. edaj

    Hello.i just want to ask something. I had my last mentruation last aug.30 ended sept.4. I had unprotected sex with my husband sept.6,8,10,and 13. Sept.27,2014 i had my period again. 27 was the first day and it ended sept.30. Its not so heavy.unlike my past mens.I dont know what is my cycle. What i knew is i always having my period every month.its just a strange feeling coz i keep throwing up this past few days.and always feel tired. A bit headache either and cant eat so much..i always feel full.. could i possibly pregnant? Hope to get answer soon.thanks.

    Reply
    1. Clepetark

      Hi , being pregnant is possible effectively as some women will experience period like bleeding during the first trimester ! test yourself to clear it out !

      Good luck

      Reply
  3. Charity

    my boyfriend fixed a condom on his penis and began
    teasing my vaginal after ejaculation (the condom didn’t burst)I also took postinor
    as double protection pls I want to know If I will get
    pregnant ?

    Reply
    1. Clepetark

      Hi , The chances a minimal but there is always a risk after ejaculation there is still spermatozoids in the urinal tray … but they have to make their way up to the tube … while you are into your fertile window … it is almost voodoo magic but possible ! having sexual contact of all kind with no protection always lead to a risk of conception, if it is not planned in a short future for you guys … be safe and protect yourself at all time

      Good luck

      Reply
  4. Shaz

    Hi. I gave birth to my first baby on the 3rd June 2014. I had unprotected sex with my husband I think somewhere on the 18th July 2014. After a month, I was tested positive for pregnancy. I will like to know how do I calculate the due date. Thanks.

    Reply
  5. Nikki Cole

    I had my period September 11 and came off on the 17th. I had unprotected sex September 26 into the 27th. Is there a possibility that I could be pregnant?

    Reply
    1. Clepetark

      Hi , depending of the lengh of your cycle, yes it is possible, shorter your cycle is more change you had to be in your fertility window !

      Good luck

      Reply
  6. hoping/mirracle

    Hi Im irregular, and had my periods last September 7 to 14 and not heavy bleeding,I had contact with my husband September 18,21,29,and October 5,9,12, but until now no period and I never had experience a lots of pimples intomy face and is so look disgusting,my question is, is it theres a possibility that I’m pregnant? And is it pimples a sign of pregnancy?
    Thanks…..

    Reply
    1. Clepetark

      Hi , Being pregnant is … being once again on growing hormones .. like your teenage age , so yes, pimples is possible, as stopping to loose hairs and growing a shoe size ! Please ! test yourself with the dates provided regular or not you hitted in your fertile window !

      Good luck

      Reply
  7. shan

    I had unprotected sex with my boyfriend from the 16th of august until 25th..my last period was august 10th…my period did not come but sept 16-18th I had light bleeding very light…now today its light again but on and off am I pregnant

    Reply
    1. Clepetark

      Hi , everything is possible with unprotected sex ! Life is often finding its way, some women experience bleeding like period for the first trimester! Test yourself ! I think you deserve to know, what is going on and to have the option to visit your physician if the result is negative to have some answers !

      Good luck

      Reply
  8. mimixoxo

    HI, i usually have a very normal period my cycle is every 28 days 7 days . I’m four days late i took a pregnancy test the first one came out positive, but it was after a couple hours that the result came up positive. Then I took two more and they both came out negative. Am I or Am I not pregnant ? Should I get blood work to make sure that I’m not pregnant ?

    Reply
    1. Clepetark

      Hi , the best way to have success on pee on the stick test is to use the morning urine, as it contain more HCG the pregnancy hormone that the test is looking for. Also taking some medication can lead to false result… Blood test is not lying, if you are still late and have a negative result again I strongly recommend you to have a blood screening.

      Good luck

      Reply
    1. Clepetark

      Hi , Indeed the ovulation period can be track even with an irregular cycle. The first day of your periods are the day 1 of your cycle. Ovulation window is between day 10 to 17 , during this period, have intimate moment one day one 2 not more … to allow more mature spermatozoids to be released, as they live 72h in the wombs be confident that there is always be some there ready to welcome the egg !

      Good luck !

      Reply
  9. dorcas

    i did my menstrual period 20 and i had sex on 30 of the same month can i be pregnant?

    Reply
  10. amber horn

    its day 2 of my period and i still have not started yet. my husband and i did have sex and my fertile day, i just wondering could i be pregnant.

    Reply
    1. Clepetark

      Hi , yes it is possible that you are pregnant if you had unprotected sex during your fertile window, test yourself and let us know !

      Good luck

      Reply
  11. TC

    Ok I had my period on Sept 16th this yr my cycles are usually 30-31 and had sex w my husband on sept 28,29 and 30th also Oct 5th. I was suppose to start on Oct 16th and I’m now 3 days late. I have had mood swings, lower back pains, heartburn and dizziness but I got 2 negatives on a hpt could I be pregnant?

    Reply
    1. Clepetark

      Hi , yu have indeed pregnant like symptom, that your body can create out of the stress on wondering if you conceive or not. If you did pee on a stick test, already with the morning urine,which should be the most concentrated on HCG and got a negative test being 3 day late, I recommend you to do a blood screening … it cannot lie !

      Good luck

      Reply
  12. Crys

    Hi, my last period was September 23- 27. I had unprotected sex on Oct 9, 10, 11. I haven’t had a period as of yet this month. Is it possible that I could be pregnant? If so, when should I test?

    Reply
    1. Clepetark

      Hi , yes you could be pregnant, it was in early fertile window ! test yourself as soon you are late for your period, with the morning urine as it have more chance to be accurate.

      Good luck !

      Reply
  13. arra

    My last period was sept 18 until now i dont have my monthly period but i took a pregnancy test and it was negative

    Reply
  14. ramatu

    i had sex with my boyfriend during the fourth day of my menstruation
    I want to know if i can get pregnant

    Reply

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