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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254 comments

  1. 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

  2. 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

  3. 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

  4. 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.

  5. 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

  6. 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. 🙂

  7. 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?

  8. 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

  9. 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??

  10. 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!

  11. 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!

  12. 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?

  13. 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

  14. 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…

  15. 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

  16. 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?

  17. Profile photo of Jackline Jackline says:

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

  18. 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 ?

  19. 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?

  20. 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.

  21. 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?

  22. 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!

  23. 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!

  24. 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!

  25. 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!

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