What tips should I keep in mind?

Success rates from CDC/SART are live birth rates, not just positive pregnancy tests. Donor eggs effectively reset the age-based decline in success rates. Each failed cycle provides diagnostic information that may improve the next.

IVF Success Rate Calculator

Estimate IVF success probability based on age, diagnosis, embryo quality, and number of cycles.

Your Age(Age at time of egg retrieval)

Primary Diagnosis(Main reason for IVF)

Embryo Quality(Quality of transferred embryos)

Number of Cycles Planned(How many cycles you plan to attempt)

Prior Live Births(Previous successful pregnancies)

Using Donor Eggs(Donor eggs have higher success rates)

Results

Visualization

How It Works

IVF success rates depend heavily on age, egg quality, and diagnosis. Each additional cycle increases cumulative probability using the complement rule.

The Formula

Single Rate = Base Rate × Diagnosis Modifier × Embryo Modifier × Prior Birth Modifier

Cumulative = 1 - (1 - Single Rate)^{n cycles}

Variables

Base Rate — CDC/SART average live birth rate per age group
n — Number of IVF cycles attempted

Worked Example

A 34-year-old with unexplained infertility, good embryos: ~38% per cycle. Over 3 cycles: 1-(1-0.38)^3 = 76% cumulative chance.

Practical Tips

Success rates from CDC/SART are live birth rates, not just positive pregnancy tests.
Donor eggs effectively reset the age-based decline in success rates.
Each failed cycle provides diagnostic information that may improve the next.
PGT-tested euploid embryos have ~60-65% implantation rates regardless of maternal age.
BMI, smoking, and AMH levels also significantly affect outcomes.

Last updated: March 15, 2026 · Reviewed by the FertilityCalcs Editorial Team