IVF Transfer Success Rate Calculator
Estimate the probability of a successful clinical pregnancy per embryo transfer.
Excellent (AA)
Good (AB, BA, BB)
Fair (BC, CB)
Poor (CC)
Fresh Transfer
Frozen (FET) – PGS/PGT-A Tested
Frozen (FET) – Untested
Yes, with IVF or Natural
No / Never Pregnant
History of Recurrent Loss
Unexplained
Tubal Factor
Endometriosis
PCOS
Diminished Ovarian Reserve
Male Factor
Normal / Not Tested
ERA Tested (Receptive)
Known Fibroids/Polyps
Your Estimated Success Rate per Transfer:
0%
How the IVF Transfer Success Rate is Calculated
In vitro fertilization (IVF) success depends on a complex interplay of biological factors. This calculator uses generalized statistical data from SART (Society for Assisted Reproductive Technology) and CDC clinical outcomes to provide an estimate. The primary driver of success is the age of the woman at the time of egg retrieval, which correlates directly with egg chromosomal health.
Example Calculation:
A 32-year-old woman (Base Rate: 55%) with an "Excellent" AA grade embryo (1.2x multiplier) and a previous live birth (1.1x multiplier) would have a calculated probability of approximately 72.6% success for that specific transfer.
A 32-year-old woman (Base Rate: 55%) with an "Excellent" AA grade embryo (1.2x multiplier) and a previous live birth (1.1x multiplier) would have a calculated probability of approximately 72.6% success for that specific transfer.
Key Factors Influencing Your Results
- Maternal Age: Egg quality and quantity decline with age, particularly after 35. This increases the risk of aneuploidy (chromosomal abnormalities).
- Embryo Quality: Embryologists grade embryos based on their physical structure (inner cell mass and trophectoderm). Higher grades generally have better implantation potential.
- PGT-A Testing: Preimplantation Genetic Testing for Aneuploidies allows for the selection of chromosomally normal embryos, significantly increasing the success rate per transfer regardless of age.
- Frozen vs. Fresh: Frozen Embryo Transfers (FET) often have higher success rates because they allow the woman's hormone levels to return to a baseline state after stimulation, creating a more receptive uterine lining.
- Reproductive History: A previous successful pregnancy and live birth is one of the strongest indicators of future IVF success.
Understanding the Outcome
It is important to remember that these percentages are per single transfer. Many patients require 2 to 3 transfers to achieve a live birth. If your result is 50%, it doesn't mean you have a 50/50 chance of ever having a child, but rather that each individual embryo placed in the uterus has that specific statistical chance of resulting in a clinical pregnancy.