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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  1. Profile photo of mamta mamta says:

    Hi my name is Mamta.. my lmp was 28/10/2015… my Dob is 17/03/1987… I had a 6 year oldggirl.. now I trying to get pregnant again .. I just want to have a boy.. Can u help me out that what time I should try..
    Thanks Mamta…

  2. Hi I been trying get pregnant for 4 months now and it’s like I’m not able and I’m having sex on my ovulation days my last period was September 29 2015 and I started my period yesterday 10/30/15 in my cycle now is 32 so when do I ovulate n conceive

  3. Profile photo of Lindsey Lindsey says:

    Hi guys, my period was the first of February and I have a short cycle it last about five days. I had sex with my boyfriend unprotected between February 1st-February 11th then we broke up. I had sex with another guy February 24 and 26 then took a clear blue week estimator test on March 6th and it said was 2-3 weeks meaning 4-5 weeks doctor terms and the 12th of March I took another and it said 3+. March 19th I heard the babies heart beat and saw it on screen and they told me I was 6 weeks and 3 days. Who could be the father?

  4. Profile photo of Jackline Jackline says:

    I mean on 29 31 July and 9 – 11August I had sex with my husband , am I pregnant?

  5. Profile photo of Jackline Jackline says:

    am Jackie , I had my last period on 25th of July 2015, and the length of my period is 25days. on the 29th July, 9 & 11 of August , do think I will get pregnant ?

  6. Profile photo of Ashley Ashley says:

    My periods we generally around the 26th of every month and then I had surgery(had my appendix removed). I went in for surgery on June first and didn’t have a period for June. But in July I had a period on the 10th. With me being so off balance it’s hard for me to calculate my ovulation date. Any suggestions?

  7. Profile photo of Sandra Sandra says:

    I’m trying to conceive but I don’t really know my ovulation days and am not sure I do ovulate but I took 50mg clomid from days 5-9 of my last cycle and when I tested with ovulation kit, I didn’t ovulate and my last period came on 25-28 of June and I took clomid 100mg days 5-9. I don’t know when I can check for ovulation.

  8. Profile photo of mary mary says:

    hi i am trying to concieve.i stopped taking my birth control 5 days ago.my cycle was supposed to come in a week and a half from now,but it came yesterday. does this mean i wont get pregnant this month?

  9. Profile photo of jennysparky jennysparky says:

    I want get pregnant my period started today and it will end on Sunday when will I ovulate

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi there – That depends on the length of time between your periods. The average is 28 days, but this varies woman to woman and will change your predicted ovulation date. Once you input this information into our calculator it will give you an estimated date. I’d recommend using an ovulation predictor kit. You can start testing a couple of days before your estimated ovulation date and continue testing until you get a positive. Best wishes!

  10. Profile photo of Jennifer Jennifer says:

    I was on my period March 16- 19th. I broke up with my boyfriend and I had unprotected sex the 24 . The guy got off inside of me. I was recently on the IUD Mirena but I got it taken out on March 4th. I was pretty regular in high school with the 26-28 day cycle. I then got back with my boyfriend and we had sex on March 28, 29, 30, 31, 2, and 4th. I just found out I am pregnant. What is the possibility of it being the first guy? My next estimated period would have been around the 13th-16th area.

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi Jennifer – According to the calculator you likely ovulated around 3/29. I recommend discussing paternity testing with your doctor. Best wishes!

  11. Profile photo of amy amy says:

    Hi.. its been 6 weeks 4 days I havent had my periods.. did 2 urine tests at home but negative and did a hcg serum test 3 days back but negative.. does ths mean im Pregnant please advise…

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi Amy – I’d recommend scheduling an appointment with your doctor. They can test you there and will be able to let you know if you’re pregnant or not, and if you’re not discuss why your cycle may be so late. Best wishes!

  12. Profile photo of Kerstin Kerstin says:

    Hey .. I was on my period March 16- 20. I had sex the 24 . The guy got off inside of me. I was recent on the iud but got it tooking out on jan 19. I started birth control pills, but at the time I had sex with the guy I wasn’t taking them regularly . Could I be pregnant or when could I take a test to find out?

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi Kerstin – If you typically have 28 days between your cycles then you likely ovulated on 3/30. I would recommend waiting until when you should be starting your cycle next, around 4/16, and testing then if your cycle hasn’t started yet. Best wishes!

  13. Profile photo of kate kate says:

    hi guys i need help im trying to have babies almost one year now i have short period days one month i dont get it next month i get it. so now my period started on march 28 to april 03 2015 when should do i start ovulating? and before that my period was from feb 20 -28 2015 different date

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi Kate – In order to determine that you are indeed ovulating and when you should try tracking your cycle. You can do so with an app on your phone, I used Fertility Friend. I would use a basal body thermometer to track your body’s temperature, which is an excellent indication of ovulation. We have a bunch more info on fertility here: http://www.everydayfamily.com/preconception-boosting-your-odds/. Once you pinpoint when you’re ovulating it will be much easier to know when to try. I would recommend using ovulation predictor kits a few days before you’re supposed to ovulating and having sex every other day starting then, and once you get a positive OPK have sex that day and for a few days in a row after. Best wishes!

  14. Profile photo of Teri Teri says:

    Hi guys need help! My last period was 25th February it’s now 7days late am I pregnant how far am I? So confusing I have symptoms of dizziness headaches backache heartburn tiredness Moody I also got a cold I don’t drink or smoke either I always eat healthy! Please help

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi Teri – If your cycle is seven days late I’d recommend taking a pregnancy test, if you haven’t done so already. Your doctor will be able to determine your due date and when you likely conceived at your first appointment, but if you fill in your information in our Ovulation Calculator (be sure to change the Avg. Length Between Cycles, as this is just an average and is different for every woman) it will tell you when you likely ovulated. Using our Due Date Calculator will also likely help. Best wishes!

  15. Profile photo of ireana ireana says:

    this question isnt necessarily for me, but the answer would be a BIG HELP!!!

    my friend slept with my boyfriend on September 7th 2014 and then on the 23rd of September i found out about them. She claims she was already 4 weeks pregnant on the 23rd when i found out, but if so how could it be my ex boyfriends baby if she was that far along already??? She knows that its between my now ex boyfriend and one other guy she messed with but she cant narrow it down and time is winding down for her son to be born.

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi Ireana – It’s tough to say without knowing this person’s cycle. You may find our Due Date Calculator to be more helpful, it will give you an estimated date of conception. I recommend she discuss paternity testing options with her doctor.

  16. Profile photo of S S says:

    Need help on cycle…My last period was 2/22/2015 & the one before that was 1/26/2015 would my cycle be 27 or 28 days? When should i start having sex in order to conceive? Thanks

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi there – I just counted the days in between your most recent cycles and it’s 27 days. I recommend buying some ovulation predictors and begin testing a few days before the calculated ovulation date. I’d also start having sex every other day at that time. Once you have a positive ovulation test have sex that day and for each of the few days following. Good luck!

  17. Profile photo of Jessica Jessica says:

    Hi! My boyfriend and I have been trying
    To get pregnant for awhile.. I usually start my period on the 24th of every month or around the 1st… If that’s so, when is the best time for us to have sex? It’s all just getting really confusing. Thanks so much! Pleaseessage me back!

  18. Profile photo of kady kady says:

    my period was feb 2nd to feb 6 i had unprotected sex on the 9th 16 & 17 but today my test says negative …HELP TTC

  19. Profile photo of amy amy says:

    Hi all. My last period was 2nd feb and last until 6th feb and i ha unprotected sex with my fiance on 13th amd 14th feb could i be pregnant

    • Profile photo of kady kady says:

      Hey amy did u ever find out if your pregnant? me too had my period feb 2 to the 6 had unprotected sex on the 9th 16 and 17 but 2 negative pregnancy test :(

  20. Profile photo of Quona Quona says:

    Trying to conceive

  21. Profile photo of dawnisha dawnisha says:

    Hello, my estimated ovulation date was January 26th, I didn’t have intercourse until Feb 1 and I am now 6 weeks prego. I’m so confused as to how that could be. Help please?

    • Profile photo of Maghan Maghan says:

      If you are 6 weeks pregnant, you would have gotten pregnant after the LAST period…so having sex on Feb 1st wasn’t when you conceived…does that make sense?

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi there – This is an estimated ovulation date, meaning you may have ovulated within a window of a few days before or after the date provided. Also, an egg lives for 12-24 hours after you ovulate. Best wishes!

  22. Profile photo of nena nena says:

    Help a sister out please ! .my circle is 28 days . My period started today 18th feb, please what date should i have sex to get pregnant. I’m in my early 30 . Thanks

  23. Profile photo of Janica Janica says:

    Hello. I need some help . Someone please answer . I started my period on the 2nd of February of this year. And it finished the 6th of February . My bf and I had intercourse on the 10th and the 11th. We stopped on the 12th and 13th. We had sex again on the 15th… Can I be pregnant ? I took a pregnancy test on Monday . And it showed a negative is it too early or when can I test again ? Need sum input please

  24. Profile photo of charlie charlie says:

    Hi everyone need some help.. me and my life long patner split .. i had a period on the 18th of jan, i am a normal 28day cycle, i had sex with someone on the 22nd of jan and then my long partner on the 28th-31st i found out today i am 4 weeks pregnant.anyone know who the daddy is :( he dosent no about the other guy and were back together am so scared x

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi Charlie – According to the Ovulation Calculator you likely ovulated on 2/1/15. I’d recommend discussing paternity testing options with your doctor. Best wishes!

  25. Profile photo of crystal crystal says:

    I had unprotected sex on december 7th 2014 and just found out im 11weeks preagnant from my last menstrual, but could i have gotten preagnant on the 7th of December or was it before?