Ovulation Calculator – Determine your most fertile days…

Every woman and every menstrual cycle are unique. Utilize our ovulation calculator to pinpoint potential ovulation dates, aiding you in identifying your peak fertility days. Take the guesswork out of the equation and optimize your chances of conception.

Ovulation Calculator
When did your last period start?
E.g. 18/01/2020
Usually, how long is your cycle?
Cycles typically vary from 23 to 35 days
Estimate your ovulation day
likelihood of ovulating today
Due to your cycle length, unfortunately we can't estimate an ovulation probability. We recommend that you use a Digital Ovulation Test to accurately detect your most fertile days.
Start of your last period
Likelihood of ovulating on this date
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In partnership with Clearblue®.
Results are based on the information you have provided and data from the publication below: Sarah Johnson, Lorrae Marriott & Michael Zinaman (2018): “Can apps and calendar methods predict ovulation with accuracy?”, Current Medical Research and Opinion, DOI:10.1080/03007995.2018.1475348

Are you pregnant? Check another tool – Due Date Calculator

Signs of ovulation

  1. Rise in Basal Body Temperature (BBT): This is a key indicator that ovulation has occurred. After ovulation, a woman’s basal body temperature tends to rise due to the increase in progesterone. Tracking BBT over the course of several menstrual cycles can help pinpoint the time of ovulation.
  2. Higher Levels of Luteinizing Hormone (LH): A surge in LH levels triggers the release of an egg from the ovary, marking the onset of ovulation. Ovulation predictor kits (OPKs) are designed to detect this surge, helping women predict the most fertile days in their menstrual cycle.
  3. Changes in Cervical Mucus: The consistency and appearance of cervical mucus change during the menstrual cycle. Around ovulation, cervical mucus becomes clearer, thinner, and more slippery, resembling raw egg whites. This facilitates sperm movement and is a fertile sign.
  4. Breast Tenderness: Some women may experience breast tenderness or sensitivity during ovulation. This is attributed to hormonal changes, particularly the increase in estrogen levels.
  5. Bloating: Hormonal fluctuations during ovulation can cause water retention and bloating in some women. This symptom is often mild but can be noticeable.
  6. Light Spotting: Spotting, or a slight discharge of blood, can occur during ovulation. This is known as ovulation spotting and is considered normal. It is usually light and may be pink or brown in color.
  7. Slight Pain or Cramping: Some women experience mild pain or cramping on one side of the lower abdomen during ovulation. This is referred to as mittelschmerz and is thought to occur due to the release of the egg from the ovary.

It’s important to note that individual experiences can vary, and not every woman will notice all these signs. Additionally, various factors, such as stress and illness, can influence the regularity or visibility of these symptoms.

For those actively trying to conceive, paying attention to these signs and tracking menstrual cycles can help optimize the chances of conception by identifying the fertile window. If there are concerns about ovulation or fertility, consulting with a healthcare professional is advisable for personalized guidance and assessment.

Optimizing Your Journey to Parenthood: Practical Pregnancy Tips

Bringing a new life into the world is an incredible journey, and understanding the nuances of conception can significantly enhance your chances of a successful pregnancy. Here are some practical tips to guide you on this exciting path:

1. Know Your Ovulation Window:

  • Understanding your ovulation cycle is crucial. While ovulation typically occurs 14 days before your next period, it can vary. Chart your basal body temperature, monitor cervical mucus changes, or use ovulation predictor kits to pinpoint your fertile days.

2. Frequent Intimacy:

  • Increase your chances of conception by having regular intercourse. Aim for sex 1 to 2 days before ovulation. Since sperm can survive for up to 5 days, it starts 3 days before ovulation and continues for a few days afterward.

3. Skip the Post-Sex Bed Rest:

  • Contrary to popular belief, there’s no need to stay in bed after intercourse. Recent studies have debunked the notion that lying low enhances fertility, so feel free to resume your activities.

4. Maintain a Healthy Weight:

  • Strive for a healthy body mass index (BMI between 18.5 and 24.9) as both underweight and overweight conditions can impact ovulation. Moderate exercise is beneficial, but avoid extreme workouts that may disrupt your menstrual cycle.

5. De-Stress for Success:

  • Manage stress to boost your fertility. Incorporate calming activities like yoga, meditation, or leisurely walks into your routine to promote overall well-being.

6. Manage Medical Conditions:

  • If you have existing medical conditions like diabetes or asthma, ensure they are well-managed. Discuss medications with your doctor, as some may affect fertility.

7. Consider His Health:

  • Fertility is a shared responsibility. More than 33% of fertility issues involve men. Encourage your partner to quit smoking, limit alcohol, eat healthily, and manage stress for optimal reproductive health.

8. Trying for a Specific Gender:

  • While theories abound on influencing a baby’s gender, natural methods lack scientific evidence. The odds are 50-50 unless you explore advanced techniques like sperm sorting and artificial insemination.


Embarking on the journey to parenthood is an exciting and sometimes challenging endeavor. By understanding your body’s natural rhythms, maintaining a healthy lifestyle, and addressing medical considerations, you can optimize your chances of conception. Remember, each person’s journey is unique, and patience, along with open communication, can be key allies on this remarkable path to parenthood.

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