Home • Tools

Implantation Calculator

Medically reviewed by Dr. Swati Chitnis, MS, DNB Dr. Swati Chitnis Dr. Swati ChitnisMS, DNB MomJunction on FacebookFollow MomJunction on LinkedinFollow MomJunction on InstagramFollow MomJunction on Instagram Expertise: Obstetrics & GynecologyExperience: 8 years
Written by , M.Pharm, PhD Dr. Joyani Das M.Pharm, PhD Follow MomJunction on Linkedin Expertise: Pharma, Health and WellnessExperience: 3.5 years
Edited by , BSc Rebecca Malachi BSc Follow MomJunction on Linkedin Expertise: Pregnancy, Health and WellnessExperience: 12 years
Last Updated on
✔ Research-backed

MomJunction believes in providing reliable, research-backed information to you. As per our strong editorial policy requirements, we base our health articles on references (citations) taken from authority sites, international journals, and research studies. However, if you find any incongruencies, feel free to write to us.

Implantation Calculator

Image: Shutterstock

Implantation is the initial phase of pregnancy when a fertilized egg adheres to the uterine wall. It is most likely to happen around nine days post-ovulation but can range from eight to 10 days (1) Here is one such calculator that shows the possible implantation dates based on when you have ovulated or when your last menstrual period was. This is when the pregnancy hormone doubles quickly and lets you know when to take a pregnancy test that comes positive. Obstetrician and gynecologist Dr. Veena Madhankumar opines, “Implantation calculators provide an estimated timeline based on your menstrual cycle and ovulation. While they can be helpful, they are not 100 percent accurate because implantation timing varies for each individual. These calculators can help you determine when you could have implantation symptoms and when you can take a pregnancy test.”

In This Article

Implantation Calculator
due_date_calc

How to embede

Note: If you know when you have ovulated, please select the "Ovulation Date" and if you don't know the date of your ovulation, please select the "First Day of LMP".



Average Cycle Length

Embed This Tool embed_tool_title_img

To embed this on to your site just copy and paste the below code.

How to embed this tool

  1. Copy the embed code to your clipboard.
  2. In your content management system, open up your HTML viewer.
  3. Paste the HTML snippet you just copied into your HTML viewer window. Then click "OK" or "Save".
  4. Finished! You have now embedded content onto your website or blog.
 

When Does Implantation Most Likely To Occur

implantation calculator for pregnancy

Implantation is a critical step in the conception process. It is the time when the embryo adheres to the uterine wall. You may see light spotting or bleeding after implantation and that is one good sign for you to note the time of implantation.

The implantation period is very short, and therefore the sperm needs to be ready to meet the egg. If the sperm is too early or late, it cannot form an embryo.

Ovulation, which is the release of eggs, typically happens around 12 to 14 days after the first day of a period (or the start of a new cycle). Implantation occurs 6 to 12 days post ovulation.

Calculating the ovulation dates, menstrual cycle and implantation can be very confusing. This is where an implantation calculator will help you. Consultant obstetrician and gynecologist Dr. Shashwat Jani opines, “Using an implantation calculator, women can estimate when implantation may occur based on their last menstrual period (LMP) or ovulation date. This can help women identify potential implantation bleeding and monitor their early pregnancy symptoms.” This calculator also helps you understand that the bleeding you have spotted is not because of a miscarriage or your next period, but due to pregnancy implantation.

(Read more : What are the first signs of implantation?)

Difference Between Implantation Bleeding and Menstrual Period

Implantation Bleeding vs Menstrual Period

Implantation Bleeding occurs around seven to 14 days after ovulation (DPO) when the fertilized egg implants in the lining of the uterus wall. While it’s happening, a small part of the uterine lining can be released or disturbed, resulting in bleeding. According to the American Pregnancy Association, implantation bleeding is lighter than a period and may last from a few hours to three days (2).

Implantation Bleeding or spotting is usually pink or dark brown in color. Whereas period blood tends to be a bright and vibrant red. During implantation, the blood takes time to travel from the uterine wall to the vagina, and thus it changes color from red to dark brown or pinkish as it is no longer fresh. Implantation bleeding is lesser. At times, the bleeding could just be a single spot, on go for a few hours or up to 1 – 2 days. But, if bleeding starts lighter and gets heavier later with constant flow and continues for 4 to 7 days then it is certainly your menstrual period.

Implantation bleeding occurs about 10 days past ovulation. So, if you find pinkish or dark brown spotting on the 22-25th day from your LMP that this could be implantation bleeding. While menstruation generally occurs 14 days past ovulation i.e. around 26-27th day from LMP. During Implantation bleeding, a woman can experience light and low strength abdominal cramps whereas menstrual cramps are more intense and stronger.

Error: Number of questions and answers should be the same.

Explore More Tools

See All
Disclaimer:

Remember, the implantation calculator is one of the many ways to determine pregnancy, not the only one. If you have any concerns regarding pregnancy or implantation or if any of these symptoms persist, contact a gynecologist.

Do you have any questions regarding the implantation calculator or any other related topics? Tell us in the comment section below!

References

MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.
  1. A J Wilcox et al., (1999 ); Time of implantation of the conceptus and loss of pregnancy.
    https://pubmed.ncbi.nlm.nih.gov/10362823/
  2. What is Implantation Bleeding?
    https://americanpregnancy.org/pregnancy-symptoms/what-is-implantation-bleeding/
  3. J.R. Trimarchi et al., (2005); Pregnancy Rate and Implantation Rate Calculations Have Limitations That Can be Overcome by Using Probability.
    https://www.fertstert.org/article/S0015-0282(05)02643-9/fulltext
Was this article helpful?
Like buttonDislike button
disqus_img

Community Experiences

Join the conversation and become a part of our nurturing community! Share your stories, experiences, and insights to connect with fellow parents.

Dr. Swati Chitnis
Dr. Swati ChitnisMS, DNB
Dr. Swati Chitnis is a gynecologist and endoscopic surgeon with over 8 years of experience. She did her bachelor in medicine at BJ Medical College & Sassoon Hospital, Pune, India  and MS at the prestigious King Edward Memorial Hospital, Mumbai.

Read full bio of Dr. Swati Chitnis
  • Dr. Shashwat Jani
    Dr. Shashwat JaniMS Dr. Shashwat Jani is a consultant obstetrician & gynecologist in Smt. N.H.L. Municipal Medical College, Ahmedabad. He has 14 years of experience with a special interest in high-risk pregnancy, infertility, and endoscopy.
    Dr. Shashwat Jani is a consultant obstetrician & gynecologist in Smt. N.H.L. Municipal Medical College, Ahmedabad. He has 14 years of experience with a special interest in high-risk pregnancy, infertility, and endoscopy.
  • Dr. Veena Madhankumar
    Dr. Veena MadhankumarMBBS, MD

    Dr. Veena Madhankumar is an experienced obstetrician and gynecologist with 25 years of clinical expertise. She completed her MBBS from Coimbatore Medical College, India, in 1999 and pursued her MD in Obstetrics and Gynecology from Sri Ramachandra Medical College, Chennai, India. Dr. Madhankumar has been associated with iCliniq for over a decade, providing expert medical consultations and guidance. She has also established a practical laparoscopy training course.


    Dr. Veena Madhankumar is an experienced obstetrician and gynecologist with 25 years of clinical expertise. She completed her MBBS from Coimbatore Medical College, India, in 1999 and pursued her MD in Obstetrics and Gynecology from Sri Ramachandra Medical College, Chennai, India. Dr. Madhankumar has been associated with iCliniq for over a decade, providing expert medical consultations and guidance. She has also established a practical laparoscopy training course.

Dr. Joyani Das
Dr. Joyani DasM.Pharm, PhD
Dr. Joyani Das did her post-graduation from Birla Institute of Technology, Mesra and PhD in Pharmacology. Previously, she worked as an associate professor, faculty of Pharmacology, for two years. With her research background in preclinical studies and a zeal for scientific writing, she joined MomJunction as a health writer.

Read full bio of Dr. Joyani Das
Rebecca Malachi
Rebecca MalachiBSc
Rebecca is a pregnancy writer and editor with a passion for delivering research-based and engaging content in areas of fertility, pregnancy, birth, and post-pregnancy. She did her graduation in Biotechnology and Genetics from Loyola Academy, Osmania University and obtained a certification in ‘Nutrition and Lifestyle in Pregnancy’ from Ludwig Maximilian University of Munich (LMU).

Read full bio of Rebecca Malachi
Latest Articles