Unlike generic IVF success tools, the Ivy Surrogacy calculator integrates age, blastocyst day (D5–D7), and morphology — all validated predictors of live birth outcomes for PGT-A euploid embryos.
IVF Success Rate Tool
Embryo Transfer Success Rate Calculator
Estimate per-transfer live birth rate and cumulative success probability for PGT-A euploid single-embryo transfers.
Most online fertility calculators oversimplify success rates by considering only age or clinic averages. The Ivy Surrogacy Embryo Transfer Success Rate Calculator is the first of its kind to integrate three clinically verified variables—age, blastocyst day, and morphology—into a unified model specific to PGT-A euploid embryos.
Our goal is to make IVF outcomes more understandable, transparent, and science-based—helping families plan their next steps with confidence.
Embryo Transfer Success Rate Calculator
Estimate live birth rate for PGT-A euploid single-embryo transfers.
#1
Live birth rate:55.8%(High)
#2
Live birth rate:55.8%(High)
Cumulative Live Birth Rate (CLBR)
80.5%
Based on 2 single-embryo transfers (PGT-A euploid).
Per-Transfer Summary
#1: D5, Morph BB
55.8%High
#2: D5, Morph BB
55.8%High
Disclaimer: Educational estimate only, not medical advice. Individual outcomes vary with endometrial preparation, lab conditions, uterine factors, and clinical protocols.
How This Calculator Works
This calculator estimates your live birth probability for each PGT-A euploid embryo transfer, based on three key clinical factors:
- Age of the egg provider: Age-related implantation probability
- Blastocyst developmental day: D5, D6, or D7
- Embryo morphology grade: AA–CC grading
CLBR Formula:
CLBR = 1 − ∏(1 − pᵢ)
Where pᵢ = live birth probability of each transfer. Per-transfer capped at ≤62%, CLBR capped at ≤97%.
Understanding Your Results
- Per-Transfer Live Birth Rate: The chance of achieving a live birth from one PGT-A euploid embryo transfer.
- Cumulative Live Birth Rate (CLBR): Your overall likelihood of having at least one live birth after several transfers using euploid embryos.
Examples:
- • 34-year-old, D5 AA embryo → ≈62% per transfer
- • 41-year-old, D6 BB embryo → ≈38% per transfer
Related Tool: Use our PGT-A Probability Calculator to estimate how many embryos are likely to be euploid first. PGT-A Probability Calculator.
Evidence-Based Factors
Embryo transfer success depends on a combination of biological, embryologic, and uterine factors. The Ivy Surrogacy model integrates findings from several large-scale U.S. multicenter studies to quantify their relative impact on live birth rates.
1. Age of the Egg Provider
Even with chromosomally normal (PGT-A euploid) embryos, live birth rates gradually decline with age due to subtle changes in oocyte quality and uterine receptivity.
2. Embryo Developmental Day (D5, D6, D7)
- • Day 5: Highest implantation and live birth potential
- • Day 6: Approximately 10–12% lower live birth rate compared with D5
- • Day 7: Substantially reduced success (~30% lower than D5)
3. Blastocyst Morphology (ICM and TE Grading)
Morphology grading remains predictive of implantation and live birth even among euploid embryos. Higher-quality (AA, AB) blastocysts yield superior outcomes compared with lower grades (BB, BC, CC).
4. Additional Considerations
While this model estimates self-transfer outcomes, it does not include gestational carrier (surrogate) data. Surrogates are typically younger and parous, which may result in higher live birth probabilities.
By integrating these evidence-based factors, Ivy Surrogacy's calculator provides a clinically grounded, transparent model that reflects real-world embryo transfer success rates.
For Surrogates
This calculator helps you understand the success probability of embryo transfers.
PGT-A tested embryos have higher success rates and lower miscarriage risk, which means a smoother pregnancy journey for you as a gestational carrier.
For Intended Parents
Plan your journey with realistic expectations.
This calculator helps you understand how many embryos may be needed for your family-building goals and sets realistic expectations for your surrogacy journey.
Tip: Use the PGT-A Calculator first to estimate euploid embryo count. PGT-A Calculator
Embryo Transfer Success: Frequently Asked Questions
1. What makes this calculator different from others?
2. Does this calculator show pregnancy rate or live birth rate?
This calculator estimates the live birth rate, not the pregnancy rate. While a positive pregnancy test marks implantation, only a live birth confirms successful completion of the IVF cycle. Because some pregnancies end in early miscarriage, the live birth rate is always lower than the pregnancy rate.
3. How accurate is this calculator?
It is based on multicenter clinical datasets from more than 15,000 euploid embryo transfers in the United States. While highly evidence-based, individual outcomes can still vary due to uterine factors, embryo quality, and clinical conditions.
4. Does this calculator include gestational carrier (surrogate) outcomes?
No. It models self-transfer results. However, gestational carriers—who are often younger and have proven fertility—may achieve higher live birth rates, particularly for older intended mothers.
5. What does "cumulative live birth rate (CLBR)" mean?
It represents the chance of at least one live birth after several single-embryo transfers. The formula is: CLBR = 1 − ∏(1 − pᵢ), where pᵢ is each transfer's success probability.
6. What is a good embryo transfer success rate?
For PGT-A euploid single transfers, typical live birth rates range from 40–60%, depending on age, embryo day, and morphology.
7. Can this calculator guarantee pregnancy?
No. The results provide an evidence-based estimate to guide expectations—not a guarantee.
References
- Lindner P et al. Live birth outcomes after euploid transfer: autologous vs. donor oocyte embryos in patients aged ≥35 years. Fertility and Sterility, Articles in Press, 2025. [Link]
- Brolinson M et al. What is the reproductive potential of euploid Day-6 and Day-7 blastocysts compared to euploid Day-5 blastocysts? Fertility and Sterility, Vol. 120, Suppl., 2023. [Link]
- Zhang WY et al. The impact of euploid blastocyst morphology and maternal age on pregnancy and neonatal outcomes in natural cycle frozen embryo transfers. J Assist Reprod Genet, 2022; 39(3):647–654. [Link]
- Murugappan G et al. Prognostic value of blastocyst grade after frozen euploid embryo transfer in patients with recurrent pregnancy loss. F&S Reports, 2020; 1(2):161–167. [Link]
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PGT-A Euploid Probability Calculator
Estimate euploid probability using age, blastocyst day, and morphology.
Embryo Transfer Success Rate Calculator
Estimate live birth rate for PGT-A euploid single-embryo transfers.
Due Date Calculator
Calculate your estimated due date from LMP or IVF transfer.
Pregnancy Weight Gain Calculator
Estimates healthy weight gain based on Institute of Medicine guidelines.
BMI Calculator
Check if your BMI meets surrogacy eligibility requirements.
Height & Weight Converter
Convert between metric and imperial units. Type in any field—we'll auto-convert the rest.
Ready to Begin Your Surrogacy Journey?
Whether you're looking to become a surrogate or start your family through surrogacy, we're here to guide you every step of the way.
This calculator provides educational estimates only and should not be considered medical advice. Results may vary based on individual circumstances. Always consult with your healthcare provider for personalized medical guidance.