Frozen donor egg success calculator
How Many Donor EggsDo I Need?
Each frozen egg has about an 8–9% chance of resulting in a live birth on average. Around 11 eggs leads to an average of one live birth, while 18–22 eggs provide strong odds for one child and a meaningful chance at a sibling.
Frozen eggs, embryos, and live births are not 1:1. These estimates show how eggs typically progress through the IVF process, so you can go in with realistic expectations, not guarantees.
Calculate My Personalized EstimateProbability of Live Birth by Number of Frozen Eggs
Assumes one healthy sperm source. Average expected live births use the same full attrition path as the funnel below, at about 8.8% per frozen egg.
| Frozen Eggs | Avg Expected Live Births |
|---|---|
| 6 | 0.5 |
| 8 | 0.7 |
| 10 | 0.9 |
| 12 | 1.1 |
| 15 | 1.3 |
| 18 | 1.6 |
| 20 | 1.8 |
| 22 | 1.9 |
| 25 | 2.2 |
| 30 | 2.6 |
Frozen eggs, embryos, and live births are not 1:1. These estimates show how eggs typically progress through the IVF process, so you can go in with realistic expectations, not guarantees.
How Frozen Eggs Lead to a Live Birth
With all IVF processes, each step, on average, reduces the number of eggs or embryos. This is normal and expected, and it is why the size of the cohort that you start with matters so much.
Taken together, this results in roughly an 8.8% chance per egg of eventually becoming a live birth. Each egg is treated independently.
Tell us a little about your plans
Every family's building process looks different. A few details help us tailor this guidance to your goals.
About Your Family
Common Questions
How many frozen eggs do I need for one baby?
If you're hoping for one child, six frozen donor eggs gives roughly a 40–45% chance of at least one live birth. Many families choose around 10 eggs, which increases the probability to about 60% based on typical IVF attrition patterns.
How many eggs should I consider for siblings?
If you hope to have two children from the same donor, many clinics suggest planning for a larger cohort. Around 18–22 frozen donor eggs offers strong odds of at least one live birth and a meaningful chance at siblings, assuming typical IVF outcomes.
Why are these ranges instead of exact numbers?
Because biology varies. Even under ideal lab conditions, outcomes are never guaranteed. Egg thaw survival, fertilization rates, embryo development, genetic testing results, and implantation success all introduce variability.
Does PGT-M change how many eggs I need?
Yes. PGT-M screens embryos for a specific inherited condition, and depending on the inheritance pattern, it may reduce the number of usable embryos by 25–50%. Because of this, some families planning to use PGT-M choose a slightly larger egg cohort to maintain similar odds of achieving their desired number of children.
Create a free account to start browsing hundreds of pre-qualified donors who are ready to match, and take the next step toward growing your family today.
Find your match