π₯ Egg Freezing Calculator
How many eggs, what odds, what cost, by your age.
For informational purposes only, not medical advice. Consult a healthcare professional.
Freezing 15 eggs at age 34 gives roughly an 85% modeled chance of at least one live birth later; the same 15 eggs at 40 give about 42%. Age dominates everything in egg freezing: egg count matters, but a younger egg is worth far more than an older one. Enter your age and egg count for your estimate plus a cost plan.
How to Use This Calculator
The odds come from published mathematical models (Goldman and colleagues, Doyle and colleagues) that combine thaw survival, fertilization, and age-related aneuploidy rates. The cost side is your own inputs.
Enter the age at which the eggs would be frozen, not your current age if those differ. Every year after the mid-30s costs a large chunk of probability.
Enter the number of mature (MII) eggs you expect to bank. Only mature eggs count in the models; immature ones rarely survive the process usefully.
Read the live-birth probability, the likely number of retrieval cycles at your per-cycle yield, the estimated retrieval cost, and ten years of storage. Adjust the cost inputs to your clinic's actual quote.
Where the Odds Come From
Each frozen egg is an independent-ish lottery ticket, and the ticket value collapses with age because aneuploidy (chromosomal errors) rises: roughly 30% of embryos are aneuploid under 35, 44% at 35 to 40, and 70% past 40. The calculator interpolates a published probability table across ages 30 to 42 and egg counts 5 to 25. The models assume vitrification (flash freezing, the modern standard with 90%+ thaw survival) and ICSI fertilization. They are population models: your AMH and antral follicle count personalize the egg-yield side, which is why clinics test those before quoting cycle counts.
Worked Example
Age 34, 15 eggs: the table gives 85% directly, no interpolation needed. Age 36, 15 eggs: 78%. Age 40, 15 eggs: 42%. Now the cost side: at $12,000 per cycle and 12 mature eggs per cycle, banking 20 eggs takes 2 cycles (12 + 8) and about $24,000 in retrieval costs, plus $600/year storage, $6,000 over ten years. A 38-year-old wanting a 75% chance needs roughly 25 to 30 eggs per the models, which at 8 eggs per cycle (typical at that age) is 3 to 4 cycles and $36,000 to $48,000 before storage. The arithmetic is why clinics counsel freezing younger rather than freezing more: two cycles at 34 beat four cycles at 40 on both odds and cost.
What the Models Assume, and Miss
| Factor | Model assumption | Reality check |
|---|---|---|
| Thaw survival | ~90%+ with vitrification | Varies by lab; ask your clinic's rate |
| Fertilization | ~70% with ICSI | Age-dependent, 60-79% in studies |
| Eggs used | All eventually thawed | Many women never return; ~40-60% utilization in studies |
| Partner/sperm | Not modeled | Male factor can cut success substantially |
| Uterus | Not modeled | Age at transfer matters less than age at freezing |
The biggest gap between model and life is utilization: the odds assume you actually come back and use the eggs. Studies find a large share of women never thaw them, either because they conceive naturally or circumstances change. That does not make freezing irrational; it makes it insurance, and insurance is priced on the bad outcome, not the average one. Get your clinic's own thaw and live-birth numbers by age band, because lab quality moves results as much as the models suggest. For the fertility context around this decision, our fertility by age page shows monthly conception odds without intervention, and our ovulation calculator covers timing for trying naturally first.
The Cost Conversation
US pricing in 2026 typically runs $10,000 to $15,000 per retrieval cycle plus $3,000 to $6,000 in medications, with storage $500 to $1,000 yearly and future IVF/transfer costs ($5,000+) when the eggs are used. Insurance coverage is expanding but patchy: some states mandate fertility preservation coverage for medical reasons (like pre-chemotherapy), while elective freezing is often out of pocket, though employer benefits increasingly include it. Financing exists but compare the interest against the biological clock honestly. And budget the medications separately; they are the line item that surprises people, because dosing (and cost) rises as ovarian reserve falls.
Timing: Earlier Beats More
The single highest-value move is freezing before 35 if you can. The models are unambiguous: 10 eggs at 34 outperform 25 eggs at 42. Between 35 and 37, 15 to 20 eggs is the commonly recommended target (70 to 80% modeled chance). Past 40, honest counseling matters more than salesmanship: the egg counts needed get large, the costs multiply, and some clinics will discuss donor eggs as a parallel option. None of this is a verdict on your choices; it is the math your decision deserves to include.
For informational purposes only, not medical advice. Consult a healthcare professional.
Frequently Asked Questions
How many eggs should I freeze at 35?
Models suggest 15 to 20 mature eggs for a roughly 70-80% chance of at least one live birth. Doyle's model puts 15 eggs at 35-37 near 70%; Goldman's puts 20 eggs at 37 at 75%. Your AMH and follicle count refine how many cycles that takes.
What age is best for egg freezing?
Under 35 is the sweet spot: egg quality is high, fewer eggs are needed, and fewer cycles are required. The models show the cost-benefit turning sharply after 37-38. Freezing at 40+ is possible but needs realistic counseling about numbers and cost.
How much does egg freezing cost?
Typically $10,000-$15,000 per retrieval cycle plus $3,000-$6,000 in medications in the US, with $500-$1,000/year storage and $5,000+ for the future transfer cycle. Most women need 1-3 cycles depending on age and reserve.
What is the success rate of frozen eggs?
Per-egg live birth efficiency is about 8% at 30-34, 7% at 35-37, 4.5% at 38-40, and 2.5% at 41-42 in the Goldman model. Cumulative success rises with egg count, which is why younger women need fewer eggs.
Do frozen eggs expire?
No meaningful expiry with vitrification; pregnancies have resulted from eggs stored 10+ years. You pay annual storage, and clinics have maximum storage terms in their contracts, but the biology does not degrade in liquid nitrogen.
Does egg freezing affect future natural fertility?
Retrieval takes the eggs that would have been lost that cycle anyway; it does not deplete your reserve faster or cause early menopause. It also does not improve natural fertility later; it is purely a backup.
What are the risks of egg freezing?
Ovarian hyperstimulation syndrome (OHSS) is the main risk, usually mild (bloating) and now reduced with antagonist protocols and agonist triggers. Retrieval is a minor surgical procedure with small risks of bleeding or infection.
How many eggs per cycle can I expect?
Highly individual: a 30-year-old with good reserve might get 15-20 mature eggs per cycle; at 40, 5-10 is common. AMH and antral follicle count predict yield better than age alone.
Is 42 too old to freeze eggs?
Not biologically impossible, but the models estimate ~61 eggs for a 75% chance of one live birth at 42, which is many cycles. An honest clinic will show you these numbers and may discuss alternatives alongside.
Does insurance cover egg freezing?
Sometimes. Medical freezing (before chemotherapy) is increasingly covered and mandated in some states. Elective freezing coverage is growing through employer benefits but remains uncommon in standard plans. Check both your medical policy and any fertility benefit carve-out.