Understanding your embryo grading and success rates is one of the most important parts of the IVF process. I made this tool to help you visualize how your embryos compare based on their morphology scores and blastocyst day (Day 5/6 vs. Day 7). Simply enter your embryo grades, whether you have a 4AA, 5BB, 3BC, or any other combination, and see a ranked comparison showing relative probability of live birth.
If you want a deeper, plain-English explanation of how embryologists grade embryos and why it matters, this topic is covered in more detail in my book “The Lucky Egg”, as well as in my blog post on embryo grading and IVF outcomes.
While embryo grading is just one factor your fertility team considers when selecting embryos for transfer, this tool can help you better understand what your grades mean and how embryologists typically prioritize blastocysts. The data for this tool is based on a study that I co-authored that examined the relationship between morphology grading and implantation rates.
Embryo Ranking Tool
Select the day and type or select the grade for each embryo, then click 'Compare Embryos'.
Embryo Comparison Results
Embryos are first grouped by blastocyst day (Day 5/6 vs Day 7).
Morphology is used to rank embryos within each group.