Ovulation Calculator

Are you trying to get pregnant or planning on it in the near future? If so, you can greatly improve the likelihood of getting pregnant by determining when you will ovulate next. Ovulation is the release of a female's ripe egg from her ovary. When this occurs, you are the most fertile.

Use our Ovulation Calculator to estimate your next ovulation date; simply enter the first day of your last menstrual period and the average length of your cycle. Because our tool provides you with only an estimate, consider yourself the most fertile during the period of 3 days before and 3 days after the estimated ovulation date. Best of luck!!


Estimated Ovulation Date:

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369 comments

  1. Profile photo of Buffy Buffy says:

    I had sex on oct 25 it said I be fertile on the 25 thru the 30 I started my period or bleed for two day can I be pregnant I had my period on oct 16

  2. Profile photo of Lalya Lalya says:

    My estimated ovulation date was 21October I had intercourse on 17 October what are my chances of being pregnant?? Please help..thanks !

  3. Profile photo of Lacy Lacy says:

    Last month in September 2017 my period started on the 28th and ended on the 30th, and I just did some math and I had sex and he came in me on the day a calculator said I ovulated which was October 16th, 2017 …..is this bad

  4. Profile photo of Lacy Lacy says:

    Last month in September 2017 my period started on the 28th and ended on the 30th, and I just did some math and I had sex and he came in me on the day a calculator said I ovulated…..is this bad

  5. Profile photo of finda finda says:

    I saw my period on the 29/9/2017 last day was 4/10/2017 when is my ovulate day or unsafe sex days.

  6. I had my periods on 11th Oct 2017 which ended on 14th.. when will my ovulation date be.. i have irregular cycles.. sometimes 35 or 39 or 31 or 29 or 41 and i even got two times period in June month.. please help

  7. Profile photo of Tiffany Tiffany says:

    I had my period September 14th it ended on September 19th when will my ovulation date be?

  8. Profile photo of Jimmy Jimmy says:

    I had my menstration on the 1st to 4th September, 2017, when will my ovulation date be?

  9. Profile photo of Jhumur Bose Jhumur Bose says:

    Hi I am trying to concieve, what is the best time days to have intercourse

  10. Profile photo of Kayon Kayon says:

    I am trying to get pregnant my period began on the 4th of August and will end about the 10th of August. When will i start to ovulate?

  11. Profile photo of Aloysia Aloysia says:

    Pls my last period was 07 29 2017 when will be my ovulation period

  12. Profile photo of LaShawn LaShawn says:

    Hi, I’m trying to conceive, but my cycle is confusing me! I had my period began on July 8th and ended on July 13th. According to my tracking my period was supposed to be back Aug. 4th, but instead came on July 31!! When are my conception dates?! Can you please help me solve this confusion?!!

  13. Profile photo of Florence Florence says:

    I had my menstruation period on 17 July 2017 till 21st July so when will be my best date to get conceive ? please help me out .

  14. Profile photo of Florence Florence says:

    Hi it’s me suzen I had my lmp on 17 July 2017 when will be my best date to get conceive

  15. Profile photo of Uda Uda says:

    Hello good morning… I’m trying to concieve. My last date of my menstruation is may 2,2017. But when i used pregnancy kit today june 19,2017 the result is negative. How many weeks that will know that i am pregnant?

  16. Profile photo of stacey stacey says:

    My the first day of my last period was may 9th and i ended on the may16th making my ovulation date may 23rd i am now 8 days late on my period im scared to test and get a negative as my SO and i have been trying to conveive

  17. Profile photo of Kathryn Kathryn says:

    I got my period on may 18 when is my ovulation date I’m trying to convince

  18. Profile photo of Vanessa Vanessa says:

    I saw my last period on may 24th,the ovulation estimated date is 47.I need to know the day of my next ovulation because I would like to conceive a baby boy

  19. Profile photo of Chelsy Chelsy says:

    Hi I’m chelsy we r in planning to have a baby. Could you plz tell me my ovalution date this month may 22 2017 I got period. Plz help me in giving suggestion.

  20. Profile photo of Priyashree Priyashree says:

    Hi,
    This is Priya. My LMP was 20-04-2017 and this month period date is 24-05-2017. Could you tell me my ovulation range for better chance of getting pregnant?

    Thanks,
    Priya

  21. Profile photo of Kasey Kasey says:

    I am 31, have had a horrible time trying to carry a baby. i have had 3 miscarriages total and one being this past february. I am actively trying to conceive and my dr tells me i am good to go. The first day of my last period was May 1st and ended on the 4th. I am very regular. and do not have complications on my monthly. However, due to the ovulation calendar, my ovulation day was May15th, which me and my husband had intercourse every day for 4 days prior to the 15th and every day for 3 days after the 15th. I am also B Neg blood type which means i have to get a injection IMMEDIATELY after finding out i am pregnant. When is a good time/window for me to take a pregnancy test?

    • Profile photo of Megan KlayEditor Megan Klay says:

      I’m so sorry to hear about your losses, Kasey. I have miscarried before as well and know how bad it hurts. 🙁 Has your doctor run blood tests to determine your progesterone and estrogen levels to make sure that everything is normal there? This is something a friend recently had tested after two miscarriages and they found she had hormone issues which were likely causing her to miscarry.
      In regard to your recent attempt, I would recommend waiting to take a test until after your missed period. Best wishes!

  22. Profile photo of Florence Florence says:

    Hello,i had my period from 4 to 9th may 2017,i want to convince please can you calculate my ovulation date for me?

  23. Profile photo of mya mya says:

    Hi, my period came May 11th 2017 and I am trying to conceive. When will I ovulate? The calculate on the site is showing “nah/nah/nah” after I enter my information. This is weird. I have a 35 day cycle, please let me know.

  24. Profile photo of Semonie Semonie says:

    Hello everyone i am 21 years old am so scared i been with my boyfriend from age 15 i am pregnant now i was happy My last period was either February the 28 or march 1, i dont have an irregular period i see my period 5 days monthly! Me and my boyfriend had unprotected sex on the 12,13,14 thats the time when i am most fertile, i dont know what came over my after drinking i had protected sex with some one on the 7th he insisted the condom didn’tI went to do my ultra sound “not the vaginal” and it saying i am due November 30 and i am eleven weeks an one day. But how could that be???? tgr ultra sound want to tell me that i say my period earlier but I didn’t, i am so worried because i don’t kniw if its my boyfriends baby.. do you think i should get an second opinion????? Something dont feel right to me???? Could i be that i am having a big baby???

  25. Profile photo of Debra Debra says:

    My last period was on the 26th April -28th April of last month, how can I know my ovulation date… Debra

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