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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275 comments

  1. Profile photo of jenely jenely says:

    can Somebody Please Explain to me This ovulation Cycle stuff ? it’s So Confusing . I’m Trying to conceive but I’m not sure when to have sexual intercourse ,even though I have it everyday except on my period . I’m on my menstrual right now February 20,2018 . my period only last 4-5 days . when is it best that I let my boyfriend ejaculate inside of me ?

  2. Profile photo of jenely jenely says:

    hi Me And My boyfriend are Trying to have A Baby . When I Should I Have Sexual Intercourse? I’m On my Period as of right now . february 20,2018.

  3. Profile photo of Ikeia Ikeia says:

    Hello no answer yet,!!

  4. Profile photo of Ikeia Ikeia says:

    Hello My Husband and I are trying to conceive .. The first day of my period was Feb. 6, 2017 what days should we have intercourse to conceive?!!!!

  5. Profile photo of Erica Erica says:

    My pierod came on on the 2nd of February and when off on the 7th of February I’m trying to find out when I will start ovulating can someone please help me??

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi Erica – How many days do you typically have between periods? If it’s 28 days, then our tool estimates you’ll be ovulating tomorrow, 2/16.
      Our Ovulation Calculator uses the first day of your last menstrual period and the average length of your cycle to calculate your estimated ovulation date. 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!!

    • Profile photo of Erica Erica says:

      Nobody can help me???

  6. Profile photo of Winnie Winnie says:

    I got my period. On the 3rd of February and want on the 6th of February. An came back on the 11of February. Just a show does. It mine. I pregnant

  7. Profile photo of Winnie Winnie says:

    I got my period. On the 3rd of February and want on the 6th of February. An came back on the 11of February. Just a show

  8. Profile photo of Glory Glory says:

    Thanks for the answer it help know when I should have ovulate

  9. Profile photo of verchelle verchelle says:

    Hi ladies. Can someone give me advice. I had started my first day of my period on November 22 2016. I had unprotected sex Dec 6 & 8th 2016. Which one would be more accurate that i conceived?

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi there – Those dates are very close together so it’s really hard to say. Is your average length between cycles 28 days? If so, according to our calculator you would have ovulated on 12/6. Best wishes to you and your baby. Congratulations!

  10. Profile photo of Quadirrah Quadirrah says:

    Hello I need some help never been pregnant before but I ovulated the 11th or 12th and had unprotected sex the 7th but 2 days later I felt mild cramping on an off for almost 2 weeks straight ,bubbles in stomach, no appetite.Also I took a pregnancy test on the 16th I think it was to soon.It just feels like something is there also felt AF cramps twice last week and nothing came.

  11. Profile photo of Erica Erica says:

    My last period was August 13th so i would be going on 23weeks pregnant but ultrasound says im 20 weeks and 3 days im due may 30th how is that and when did i get pragnate then

  12. Profile photo of Monica Monica says:

    According to my ovulation tests I ovulated on the 2-3 of January. My whole menstrual cycle is off. Last month I was a week late but only had it for two days. I am supposed to be almost due for my next one but my body is telling me otherwise. When should I take a pregnancy test?

  13. Profile photo of Shion Shion says:

    My cycle began on Nov 6 it ended on Nov 13 but I’m obviously not understanding how this goes!!!!! Can some one tell me in a simple way when I’m ovulating

  14. Profile photo of Laura Laura says:

    Had my LMP 10/24/16 expected ovulation was on the 11/06/16 had unprotected sex the whole week I was fertile and the day ov today is the tenth iam cramping don’t understand why sooo soon iam feeling like my hopes are 0

  15. Profile photo of Kristina Kristina says:

    I have a question. If I had sex October 22,25 and had my cycle on October 26 lasting 7days and had sex November 2. Since I been having headaches and I been feeling like i have to throw up but nothing comes up. Could I be pregnant? Please help me to understand. Thanks

  16. Profile photo of Alicia Alicia says:

    Hello,
    I have a quick question.
    My last period was 10/23 lasted 3days. Accoriding to the calendar I Ovulate 11/6. Had unprotected sex 10/28 is it possible to get pregnant during “fertile” days or only actual day of ovulation ? Thanks.

  17. Profile photo of Catherine Catherine says:

    Can somebody help me I’m trying to convince my period came on the 10/18/2016 i stay for 5 days it’s normal

  18. Profile photo of Dana Dana says:

    I had to get on birth control in february 2016 to conceive so I took it until April then stopped. Got pregnant, found out I was expecting may13. Got faint pos so went same day had blood work done. Blood came back next day pos. So first doc visit june 9 2016, I was 5 weeks 3 days. And miscarried thAt day after leaving doc office. So then I started back on pills again in Sept. Stopped on week 3. Started period oct 14. Was normal. So was wondering if I could be pregnant. Have had sex at least 5 times since period.

    • Profile photo of Megan KlayEditor Megan Klay says:

      Sorry for your loss, Dana. I’ve lost a baby as well and it’s definitely a hard thing. Best wishes in conceiving! You certainly could be pregnant, you can find fairly reasonably priced tests out there. 🙂

  19. Hi I’m Crissa I just lost my baby this aug. 28, 2016 and my OB told me that I could be pregnant as soon my menstruation stops.. we had it last Sept. 29, 2016 and I took a PT as early as Oct. 13, 2016 the result is negative but I feel little dizziness and sometimes wanted to vomit Im craving also for foods specially to sweets and sometimes I feel exhausted.. I feel frustrated I wanna have a baby as soon as possible coz Im not getting any younger I am already 30yrs old. I just wanna ask if my OB is right when she says that I could be pregnant again with no risk involve bec I just had a delivery this year via CS.. is it safe for me to be pregnant again?

  20. Profile photo of bernie bernie says:

    hi im not quite sure when im ovulating cos recently iv been coming on my period on the 29th of each month for 3 days and i came on last month on 23rd october, so am not surw now what days im suposed tobe ovulating

  21. Profile photo of Raina Raina says:

    Hi I need help I started my period on 10/08/2016 and my fiance and I have been trying to get pregnant for a Lil over a year now how do I know when I’m ovulating??

  22. Profile photo of Clarisa Clarisa says:

    Hello everybody I just found out that I’m 6 weeks and 2 days I’m so scared its like starting all over again having a lil person who needs you 24/7

    • Profile photo of Megan KlayEditor Megan Klay says:

      Congratulations, Clarisa. You’ll do great! Just be patient with yourself and with baby. Also, ask for help where you can, and take it when it’s offered!

  23. Profile photo of Rokkiyya Rokkiyya says:

    My nipples has a knot in them what to do im 7months pregnant

    • Profile photo of Megan KlayEditor Megan Klay says:

      Hi there – I’m not sure I understand your question, but it sounds like something you should discuss with your doctor at your next appointment. Best wishes!

  24. Profile photo of laura laura says:

    I took a pregnancy test November 5th 2015 it said 1-2 on it. Would it be safe to say I got pregnant any where from October 23rd or after?

  25. Profile photo of Kelcy Kelcy says:

    Ive been trying to get pregnant for 3 months now i use to have my period on the 20-23 we november it 18-20 and now i started on 14 of this month what does this mean. When do i ovulate

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