This ovulation calculator allows you to find out when you'll be most fertile, and what your due date would be if you got pregnant on these dates.
What was the first day of your last period?
What is your average cycle length?
For the best chance of getting pregnant, you need to maximise the chance of your fertile egg and your partner's sperm getting together. You can only get pregnant on the few days each cycle around ovulation, when an egg is released.
When is the best time to conceive?
To increase your chances of getting pregnant, you need to get your fertile eggs and your partner's sperm together as often as possible. You can only get pregnant on the few days each cycle around ovulation, when an egg is released.
How does the menstrual cycle work?
- Your cycle starts on the first day of your period and continues up to the first day of your next period.
- At the same time, eggs begin to mature in the ovary.
- The lining of the womb thickens ready for fertilisation.
- During ovulation your cervical mucus becomes thinner and clearer to help the sperm reach the released egg.
- About 10 to 16 days before the start of your next period, an egg is released from one of the ovaries (ovulation).
- If sperm is present at the moment of ovulation, or some time during the next 24 hours, the egg may be fertilised.
- If the egg has not been fertilised, the egg is re-absorbed by the body, the hormone levels drop, and the womb lining is shed. This is the beginning of your next period.
Conception and sex
To boost your chances of conceiving, aim to have regular sex throughout your cycle so you know that there should hopefully be good-quality sperm waiting for the time that the egg is released. An active sex life is all most people need to conceive.
If you are quite sure when you ovulate each month you can give yourself the best chance of getting pregnant by having sex in the days leading up to ovulation. Continue having sex during ovulation. After this your fertile time will be over for that cycle.
Taking a pregnancy test? Read about how pregnancy tests work.
How to spot the signs of ovulation
Ovulation usually happens about 10 to 16 days before the start of your next period, so it helps to know your cycle length before you start trying to conceive.
You may never have considered when you might ovulate within your cycle, and if you have been using a hormone contraceptive such as the Pill, you won’t have had a natural menstrual cycle for a while.
As a first step, mark on your ovulation calendar the dates that you bleed during a period. You can then count how many days from the first day of your period to your next period to work out the length of your cycle.
Cervical mucus changes
The cervix secretes mucus throughout the menstrual cycle, starting off sticky white and gradually becoming thinner and clearer.
Before and during ovulation the mucus increases and becomes much thinner, slippery and stretchy. Women often compare it to raw egg white.
This thinner mucus is designed to help the sperm swim easily through it. It indicates that you are in your fertile phase, so this is the time to have sex if you want to get pregnant, but use contraception if you do not!
The last day you notice the wetter secretions is sometimes known as ‘peak day’ and for most women this occurs very close to the time of ovulation.
You can also find out about your menstrual cycle by keeping a note of your temperature each morning when you wake up. Your temperature rises by about 0.2°C when ovulation has taken place.
As it is only an indicator that you have ovulated, and doesn’t tell you when your fertile time starts, this is not very useful for most women.
Using ovulation test kits (also known as ovulation predictor kits)
Ovulation predictor kits are available from chemists and are fairly simple to use. They work by detecting a hormone in your urine that increases when ovulation is about to take place.
The simplest ovulation test kits check for luteinising hormone (LH), which surges 24-36 hours before ovulation. This will help to identify the best two days for conception, although a woman can be fertile for a day or so before and after this time.
It is best to become familiar with your usual menstrual cycle to help figure out when you should start testing. If you have an irregular cycle then an ovulation predictor kit can help you identify the time of ovulation, but expect to use more of the test strips.
- Macdonald S, Macgill-Cuerden J (2012) Mayes’ midwifery: a textbook for midwives, 14th edition, London Balliere Tindall
Amanda, 26, and husband Judd, 29, from Essex, adopted a healthier lifestyle when planning to have a baby. They now have a daughter called Shelbie.
Hayley, 27, and Sam, 28, a barista from Lincolnshire knew their health conditions would make conception a challenge. But they didn’t give up. Following fertility treatment, they now have a daughter, Amaryllis. This is their story.
Claire Gale, 30, and husband Mark, 32, from Bournemouth always wanted a family. Last year and 8 weeks into her pregnancy, Claire miscarried, but she trusted her body to tell her when it was time to try again for a baby.
Lauren, 33, from Essex, and her husband Victor, 33, struggled to conceive and endured a miscarriage and pre-eclampsia before they had their beautiful daughter Cherry.
ℹLast reviewed on June 13th, 2017. Next review date June 13th, 2020.
By Beatrice (not verified) on 21 Jan 2020 - 08:31
I saw my period on the 16 January and complete it on d 20, when are my ovaries going to be ready
By Rosyli Palaubsanon (not verified) on 21 Jan 2020 - 18:18
I saw my period,last dec 28,2019.but it should be dec.16...my boyfriend and i making love last dec.13...is it possible to become pregnant?that i saw my blood last dec.28 2019
By Faith (not verified) on 16 Jan 2020 - 15:21
My period come on second of this month please when is ovulation
By Benny (not verified) on 11 Jan 2020 - 13:22
I had unprotected sex on the 24th day of my cycle after evacuating, I am supposed to see my period yesterday which is the 28th day of my cycle but not forthcoming, I am possibly pregnant?
By an Juliet (not verified) on 7 Jan 2020 - 23:06
I saw my period on 4 and finish on 8 plz when we I see my ovulation
By Micheal chioma (not verified) on 7 Jan 2020 - 22:20
I saw my period on the 28th of Dec to 1st Jan 2020 when am i expecting my ovulation
By louis (not verified) on 6 Jan 2020 - 12:08
my period is not regular. it's sometimes skips a month, sometimes two months, sometimes three months. with this situation, how do I calculate my ovulation and increase my chances of getting pregnant
By Oluwa (not verified) on 4 Jan 2020 - 02:01
I finished my period on the 12th of December 2019.. I had Sex on 22th of the same month...
By Blessing (not verified) on 29 Dec 2019 - 16:51
started menstruation on 13 December, had sex on 28 night could I be pregnant?
By blessing (not verified) on 4 Jan 2020 - 10:31
if I see my mensuration on 2 January 2020 than how many days will it take for my ovulation to come out
By Rhoda (not verified) on 28 Dec 2019 - 23:52
Am confused,the ovulation is how many days?
and it is after menstruation or is the 10th day to 15th day?
By Ems (not verified) on 26 Dec 2019 - 03:20
I have sex in 26 my last mens is dec 5 can i get pergnant before my nxt..txn
By Pat (not verified) on 18 Dec 2019 - 15:35
I saw my period on the 8 Dec and completed it on d 11.when are my ovaries going to be ready
By Suz (not verified) on 19 Dec 2019 - 09:47
I had my periods on December 6 and completed them on d 10th wen will I ovulate.
By Evelyn (not verified) on 27 Dec 2019 - 12:08
I want to know my next fertile days
By Priscillia (not verified) on 17 Dec 2019 - 20:46
My last period was july4, and i had sex on july 10 with my ex another one on july14 with my bf am pregnant dont no the owner.
By Sophie (not verified) on 10 Jan 2020 - 13:40
The only way you will know the man responsible for that pregnancy is when you give birth & get a DNA test.
By Bertha (not verified) on 13 Dec 2019 - 06:40
I Started Bleeding At 5th Dec And I Completed At 11th Dec So When Are My Overias Going To Be Ready?
By Esther King (not verified) on 20 Dec 2019 - 03:54
Our cycles are the same 17 to 23rd
By Dennis Amarachi (not verified) on 11 Dec 2019 - 17:18
Start period on 4 December ends 8 December when am I ovulating
By Lawalson Taiwo (not verified) on 18 Dec 2019 - 13:09
I start my period on 22nd and finish it 26th day, what date is my ovulation .
By Rhoda (not verified) on 28 Dec 2019 - 23:33
I prefer natural family planning
By Cole (not verified) on 9 Dec 2019 - 15:48
Just started my menstruation today (4days), pls how do I calculate my ovulation and my chance of getting pregnant
By Pat (not verified) on 22 Dec 2019 - 09:47
I had a spot today when will I ovulate
By Hally (not verified) on 22 Nov 2019 - 11:34
I had my period on 2nd of November and I had unprotected sex on 10th of November a day to my ovulation what is the tendency, pls I need an urgent reply.......
By Diva (not verified) on 20 Nov 2019 - 23:43
My last period was on October 16. 2019, I had unprotected sex on 8th 2019 November and now my period is late. Can I be pregnant. Please help
By Ayoade adenike (not verified) on 27 Oct 2019 - 20:42
I started my menstruation 14th October and ends 20th October wen is my ovulation date
By Meena (not verified) on 15 Oct 2019 - 03:37
My mensturation sep 17 and I have Intercourse in sep 5, so I got pregnancy is possible or not, and I have 2month baby and give breast feeding please help me
By Oyise hope (not verified) on 1 Oct 2019 - 18:51
I saw my period last month 24 and ended 27
By Olayemi (not verified) on 8 Oct 2019 - 14:59
I did my 1st period on 3rd of last month and another 26th of last month too when was my ovulation time pls help me
By Michelle (not verified) on 16 Oct 2019 - 18:59
If you have a regular 26 day cycle then you could have ovulated between the 10th - 15th of the month.
By lulu (not verified) on 27 Sep 2019 - 14:56
I saw my period last month August 27 is it normal I see on 27 September
By caitlyn (not verified) on 7 Nov 2019 - 15:14
yes. it is a 30 days cycle
By Ruby (not verified) on 22 Sep 2019 - 12:02
I can sex after periods 7 days is it the any chance of pregnancy
By Crystal (not verified) on 30 Sep 2019 - 14:58
I had sex with my husband after my 7 Day of my menstrual cycle is it a chance I can't get pregnant
By Olivia (not verified) on 15 Sep 2019 - 06:41
My menstruation started today 15 September 2019, i want to know my days, i want to works towards getting pregnant immediately and my ovulation day, i need twins thanks ..
By Sirisha K (not verified) on 20 Sep 2019 - 08:36
Why am getting stomach pain and abdominal pain during ovulation days
By Kanya (not verified) on 1 Oct 2019 - 14:15
I had test, the result says I'm 3+ now I'm confused cause, I think I got pregnant on 6th September
By Lydia (not verified) on 17 Oct 2019 - 21:03
I will appreciate
By Angel (not verified) on 14 Sep 2019 - 19:47
I had my period on d 12 August 19.I had sex with my bf 5 datz after....ad later had sex with my ex 10 later.now am pregnant Hw do I knw who is d father
By Michelle ross (not verified) on 10 Sep 2019 - 13:11
i started my period on the 23rd of august and finished periods on 27th august has unproted.sex on the 1st september is it possible i could be pregnant i am getting cramping in my lower stomach
By Faith (not verified) on 10 Sep 2019 - 08:45
I saw my period on d 12 on August and I had unprotected sex nd he came in me.6 of September plz I wanna no can I be pregnant be4 my next period
By Mukhsina (not verified) on 9 Sep 2019 - 21:52
I had sex just the next day after my period and it was unprotected sex.can I get pregnant?
By Puso (not verified) on 4 Sep 2019 - 04:40
I had ectopic pregnancy in 2018 since then I have been trying to get pregnant again but no lucky I even know my ovulation time bt still no baby.
I’m loosing patience now..because I always test negative results n it’s hurting
By MY NAME IS RUKAIYAT (not verified) on 30 Sep 2019 - 21:57
MY COMMENT IS THAT I HAVE ECTOPIC SINCE 2015 TILL DATE I CAN CONCEIVE WHAT WILL I DO
By zeynep (not verified) on 29 Aug 2019 - 02:11
please help me i try with my partner for a baby but is nothing not helping
By Rachel (not verified) on 28 Aug 2019 - 16:58
Hi everyone, I have never written in a forum before but I just wanted to share and see if anyone has had a similar experience to myself. I have a 4 year old son who has a different dad to my partner I am now with, xmas just gone we fell pregnant very soon into our relationship and we were both happy but unfortunately I started to bleed when I thought I was 11 weeks! So went for scan the said I was measuring 6 weeks and there was a sac and no embryo or yolk, went back a week later there was a yolk, went back another week after they said no yolk now and no growth and I would loose the pregnancy. I was devistated and it has really ruled my life for a while now, I finally miscarried a few weeks later naturally and then waited and a few months later I think it was May cycle I got a positive test as I was a week late, anyway the next day after I took the test I came on so I think I had a chemical miscarriage. Then in June I started to get pregnancy symptoms yet again and decided this time to not take a test BUT this time my period was on time so not sure if that was one or just period symptoms like sore boobs! So the past 2 months I have had 29 day cycles both perfectly normal and we are going to try again this month but I am so so scared. I have been going for acupuncture and eating healthy ect but I'm so worried there is something wrong with me or my partner and it gives me anxiety every day and rules my life. Hope someone can maybe relate thanks Rachel x
By Shay (not verified) on 8 Sep 2019 - 15:28
Hi, I just went through something similar but it was called embryonic pregnancy 1 week there was my baby the following week there wasn’t no baby just a sac and I’ve miscarried a few weeks later. I’m trying to have another baby but I think something is wrong with me because this is my 2nd miscarriage this year 2019. And I’m devastated because I have severe depression and anxiety and by me losing my babies back to back make me scared to keep trying.