See published, age-banded live birth rate reference ranges for IVF (own eggs) and egg freezing/thaw, drawn from published national fertility reporting. These are population statistics, not a personal prediction.
Published national IVF reporting and egg-freezing outcome studies group results into broad age bands, because live birth rates fall as egg age increases. This tool looks up the age band you fall into and shows the roughly reported range for that band. It is a population-level reference — real individual chances depend on ovarian reserve, sperm factors, uterine factors, embryo quality and the clinic performing treatment, none of which a simple age lookup can measure.
⚕️ Medical Notice: This calculator shows population averages from published national IVF and egg-freezing reporting. It is not a personal prediction of your own chance of success. Speak to your fertility specialist and ask for their clinic's own published success rates, which vary from clinic to clinic and depend on your individual medical circumstances.
| Parameter | Value |
|---|
Published national IVF reporting groups outcomes by the age of the woman at the time of egg collection (for IVF with own eggs) or at the time of egg freezing (for egg freezing/thaw). Rates are reported as ranges because they vary year to year, registry to registry, and clinic to clinic — this tool shows a broad reference band for your age, not one exact number.
| Age Band | Approx. Live Birth Rate per Transfer |
|---|---|
| Under 35 | Roughly 45–55% |
| 35–37 | Roughly 30–40% |
| 38–40 | Roughly 20–30% |
| 41–42 | Roughly 10–20% |
| 43 and over | Commonly single digits to low teens, varies a lot |
| Age at Freezing | Approx. Chance of at Least One Live Birth per Woman |
|---|---|
| 35 or younger | Roughly 50% or higher, with an adequate egg bank |
| 36–39 | Moderately lower, declining through this range |
| 40 or older | Notably lower, commonly cited around 15–20% |
Fertility statistics are reported in several different ways, and mixing them up is one of the most common sources of confusion. A per-transfer rate is the chance of a live birth from a single embryo transfer — the figures used for the IVF bands above. A cumulative rate is the chance of a live birth after multiple embryo transfers from one egg collection, which is naturally higher than any single transfer's rate because it adds together several attempts. A per-woman rate, used for egg freezing, is the chance that a woman who freezes eggs and later thaws them will end up with at least one live birth, considered across the whole process of thawing, fertilising and transferring embryos from her frozen egg bank.
Age is the single strongest population-level predictor of IVF and egg-freezing success, which is why success statistics are almost always reported by age band. But within any given age band, real outcomes vary widely from person to person because age is only one input among many. A simple age-based tool like this one cannot capture:
For egg freezing, the number of mature eggs banked has an enormous effect on the eventual chance of a live birth, often more than a year or two of age difference. A commonly cited reference point is that a woman under 35 typically needs around 9–10 mature eggs frozen for roughly a 70% chance of at least one live birth from that egg bank. Because egg quality declines with age, older women generally need considerably more eggs frozen to reach similar odds — which is part of why the per-woman ranges reported for older age bands are lower even when a similar number of eggs is frozen. This is also why clinics increasingly counsel patients on egg number, not age alone, when discussing egg-freezing expectations.
Why does IVF success drop with age?
Both egg quantity and egg quality decline as women get older, and this decline accelerates from the mid-30s onward. Fewer eggs are retrieved on average, and a higher proportion of those eggs have chromosomal abnormalities, which lowers the chance that any single embryo transfer results in a live birth. This is why published age bands show a clear downward trend in success rates with increasing age.
Is this my personal chance of success?
No. The ranges shown are population-level statistics drawn from published national IVF reporting and egg-freezing outcome studies, averaged across large numbers of patients in each age band. Your own chance depends on individual factors such as ovarian reserve, sperm quality, uterine factors and embryo quality that this simple age-based tool cannot measure. Speak with a fertility specialist for guidance specific to your situation.
How many eggs should I freeze for a good chance of a future baby?
There is no single number that guarantees an outcome, but a commonly cited reference point is around 9–10 mature eggs frozen for a woman under 35 to have roughly a 70% chance of at least one live birth from that egg bank. Because egg quality declines with age, women freezing eggs at older ages typically need considerably more eggs banked to aim for similar odds. Your clinic can give you a more individual estimate based on your ovarian reserve testing.
Does egg freezing guarantee a baby later?
No. Egg freezing preserves eggs at their current age and quality, but it does not guarantee a future live birth. Not every frozen egg survives thawing, not every thawed egg fertilises, not every embryo develops normally, and not every embryo transfer results in a pregnancy. The published per-woman rates reflect this whole chain of steps, which is why they are meaningfully below 100% even for younger women with a reasonable egg bank.
What's the difference between per-transfer and per-woman success rates?
A per-transfer rate (used for IVF with own eggs on this page) is the chance of a live birth from one single embryo transfer. A per-woman rate (used for egg freezing) is the chance that a woman who freezes and later thaws her eggs ends up with at least one live birth across the whole process, from thaw through to transfer. Per-woman and cumulative rates are generally higher than any single per-transfer rate because they account for multiple attempts or the whole egg bank rather than one transfer alone.
Do clinic success rates vary a lot?
Yes, sometimes considerably. Clinic-reported success rates can differ from national averages and from each other due to differences in patient case-mix, laboratory techniques, and how rates are calculated and reported. National figures like the ones shown here are a useful general reference point, but they are not a substitute for asking your own clinic for their specific published success rates for patients in your age group and circumstances.
Does male-factor infertility affect these numbers?
Yes. This calculator only reflects the age-related, egg-quality side of fertility. Sperm quality and male-factor infertility (such as low sperm count, motility or morphology issues) can significantly affect fertilisation rates and embryo development regardless of the woman's age. A couple facing male-factor infertility may have a different real-world chance of success than the age-only figures shown here suggest, and should discuss this with their fertility specialist.
How is IVF success typically measured?
Live birth rate is generally considered the most meaningful outcome measure, since it reflects an actual baby born rather than an intermediate milestone. Other measures sometimes reported include clinical pregnancy rate (a pregnancy confirmed on ultrasound) and biochemical pregnancy rate (a positive pregnancy test), but both of these can be higher than the live birth rate because not every early pregnancy continues to a live birth. This page uses live birth rate figures wherever possible for that reason.
What other individual factors affect real-world success beyond age?
Beyond age, key individual factors include ovarian reserve (often assessed via AMH and antral follicle count), sperm quality, uterine and tubal factors, prior reproductive history, body weight, smoking status, underlying medical conditions, embryo quality and genetics, and the specific clinic and protocol used. These factors can shift an individual's real chance of success meaningfully above or below the population average shown for their age band.