Egg Freezing Calculator

Q: How much does egg freezing cost?

In the United States, one cycle usually costs $10,000 to $15,000 , plus $4,000 to $6,000 for hormone medicines. Storage adds about $500 to $1,000 per year . Later, thawing the eggs, fertilizing them, and doing an embryo transfer costs another $5,000 to $10,000. If you need two retrieval cycles, double the first number. Some employers and insurance plans now cover part of the cost.

Your Egg Freezing Details

Age at Egg Freezing (years)

Supported range: 24–42 years.

Number of Mature Eggs (MII Oocytes)

Enter the number of mature (Metaphase II) eggs — not total eggs retrieved.

Privacy notice: Nothing you enter is stored or sent anywhere. This tool runs entirely in your browser.

Estimated Outcomes

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Chance of At Least 1 Live Birth

Spring Fertility model

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Expected Euploid Embryos

From thaw → blastocyst → euploid rates

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“What if I freeze more eggs?” — Explore how freezing more or fewer eggs changes your odds (Spring Fertility model):

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Three-Source Comparison

Data source	Per-egg efficiency used	At least 1 live birth	2 or more live births

Chance of At Least 1 Live Birth vs. Eggs Frozen

Step-by-Step Solution

Introduction

Freezing your eggs is a way to save a chance at pregnancy for later. But most people want to know one thing: how many eggs do I need? This egg freezing calculator gives you an answer based on real clinic data.

Type in two things: your age when you froze (or plan to freeze) your eggs, and how many mature eggs you have. Mature eggs are also called MII oocytes. Your clinic counts them apart from the total eggs they collect. Only mature eggs can be fertilized, so they are the ones that matter here.

The tool then shows you:

Your chance of at least one live birth
Your chance of two or more live births
How many healthy (euploid) embryos you may get
How the odds change if you freeze more eggs

Your results come from three sources: Spring Fertility clinic data, the Doyle study, and the Cobo study. Each one used a different group of patients, so the numbers are not the same. Seeing all three gives you a fair range instead of one lucky guess.

Age matters a lot. Younger eggs are more likely to become healthy embryos, so fewer are needed. Older eggs need higher numbers to reach the same odds. The step-by-step section shows the exact math, so nothing is hidden.

These are estimates, not promises. Your own health, your clinic's lab, and simple luck all play a part. Use this calculator to plan and to ask better questions, then talk with a fertility doctor about your own case.

How to use our Egg Freezing Calculator

Enter your age at egg freezing and how many mature eggs you froze. The calculator shows your chance of at least one live birth, your chance of two or more, and how many healthy (euploid) embryos to expect, based on three real data sources.

Age at Egg Freezing (years): Type your age on the day your eggs were frozen. Use ages 24 to 42. Age matters most, because younger eggs have better odds per egg.

Number of Mature Eggs (MII Oocytes): Type how many mature eggs your clinic froze, not the total eggs they took out. Your clinic report lists this number as MII or mature oocytes. Enter a number from 1 to 100.

"What if I freeze more eggs?" slider: Drag the slider to test other egg counts. It updates your live birth chance right away, so you can see how many eggs you may want to freeze.

Click Calculate My Chances to see your results, the chart, and the step-by-step math. Click Reset to start over.

What Egg Freezing Is

Egg freezing (also called oocyte cryopreservation) is a way to save your eggs for later. A doctor gives you hormone shots for about 10 to 12 days so your ovaries grow many eggs at once. The eggs are then taken out in a short procedure and frozen fast using a method called vitrification. They can stay frozen for years. When you are ready to try for a baby, the eggs are thawed, mixed with sperm, grown into embryos, and placed in the uterus.

Mature Eggs (MII) Are What Count

Not every egg your clinic collects can be used. Only mature eggs, called MII or Metaphase II eggs, can be fertilized by sperm. Your clinic reports two numbers after retrieval: total eggs retrieved and mature eggs frozen. The mature number is the one that matters for your future odds, and it is usually about 70% to 80% of the total.

Why Age Matters So Much

Age at the time of freezing is the biggest factor in your results. It matters more than your age when you later use the eggs, because frozen eggs do not get older. Younger eggs are more likely to have the right number of chromosomes. Eggs with the normal number are called euploid, and these are the ones that most often lead to a healthy baby. Under age 35, about 60% to 70% of embryos are euploid. By age 40, that drops to under half. This is why a 32-year-old and a 40-year-old with the same egg count do not have the same chance.

The Steps From Egg to Baby

Each frozen egg has to pass through several stages, and some eggs drop out at every step:

Thaw survival: about 90% to 92% of frozen eggs survive warming.
Fertilization: most surviving mature eggs fertilize with ICSI, where one sperm is injected into each egg.
Blastocyst growth: only some fertilized eggs grow for 5 to 6 days into a blastocyst, the stage used for transfer. This rate falls with age, from about 35% to around 16%.
Euploid testing: embryos can be tested (PGT-A) to check the chromosomes. Age drives this rate the most.
Live birth: a healthy, tested embryo leads to a live birth about 60% to 65% of the time per transfer.

Multiply these steps together and you get "per-egg efficiency", the chance that one single frozen egg ends up as a baby. For a 35-year-old that is roughly 13%. That sounds low, but it is why clinics recommend freezing many eggs in one or more cycles.

Where the Numbers Come From

This tool uses three real data sets: Spring Fertility's clinic data on 13,533 warmed eggs, Doyle and colleagues' study of 1,283 warmed eggs, and Cobo and colleagues' study of 1,513 warmed eggs. They do not all agree. Spring's rates are higher partly because embryos were chromosome-tested and because it is one lab with its own methods. Cobo's numbers may look lower because some patients stopped treatment before using all their embryos. Seeing all three gives you a fair range instead of one best-case number.

How to Read Your Results

These are averages from large groups, not a promise about you. Your own AMH level, antral follicle count, health conditions like endometriosis or PCOS, and your clinic's lab quality all shift your real odds. Freezing more eggs raises your chance, but the gain gets smaller with each extra egg. Going from 5 to 15 eggs helps a lot more than going from 25 to 35. Many people do two retrieval cycles to reach a comfortable number. Use these estimates to start a conversation with a fertility doctor, not to replace one.

Formulas used

Probability of no live birth from n eggs

P(0) = (1 - p_{\text{egg}})^{n}

Chance of at least 1 live birth

P(\ge 1) = 1 - (1 - p_{\text{egg}})^{n}

Probability of exactly 1 live birth

P(1) = n \times p_{\text{egg}} \times (1 - p_{\text{egg}})^{n-1}

Chance of 2 or more live births

P(\ge 2) = 1 - P(0) - P(1)

Expected euploid embryos

E_{\text{euploid}} = n \times 0.92 \times r_{\text{blast}} \times r_{\text{euploid}}

Expected live births from euploid embryos

E_{\text{live}} = E_{\text{euploid}} \times 0.63

Frequently asked questions

How many eggs should I freeze to have a good chance of one baby?

It depends on your age. Common targets for about a 70% chance of one live birth:

Under 35: around 10 to 15 mature eggs
35 to 37: around 15 to 20 mature eggs
38 to 40: around 25 to 30 mature eggs
Over 40: often 40 or more, and odds stay lower

If you want two children, plan on roughly double. Many people need two retrieval cycles to hit these numbers.

What is the best age to freeze your eggs?

The late 20s to early 30s is the sweet spot. Eggs are healthier then, and you get more of them per cycle, so each egg is worth more.

But freezing too early can mean paying storage fees for eggs you never use. Ages 30 to 34 tend to be the best balance of good egg quality and real need. After 35, quality drops faster each year, so waiting costs you more eggs.

How many eggs are retrieved in one egg freezing cycle?

The average is about 10 to 15 eggs per cycle, but it varies a lot. Rough averages by age:

Under 35: 12 to 20 eggs
35 to 37: 10 to 15 eggs
38 to 40: 7 to 12 eggs
Over 40: 3 to 8 eggs

Only about 70% to 80% of those are mature (MII) and get frozen. Your AMH level and antral follicle count predict your number better than age alone.

How long can eggs stay frozen?

There is no known time limit. Once eggs are frozen in liquid nitrogen at -196°C, all activity stops, so they do not age or break down.

Babies have been born from eggs stored for over 10 years, with the same success rates as eggs stored a short time. Some countries set legal storage limits, so ask your clinic about local rules.

How much does egg freezing cost?

In the United States, one cycle usually costs $10,000 to $15,000, plus $4,000 to $6,000 for hormone medicines. Storage adds about $500 to $1,000 per year.

Later, thawing the eggs, fertilizing them, and doing an embryo transfer costs another $5,000 to $10,000. If you need two retrieval cycles, double the first number. Some employers and insurance plans now cover part of the cost.

Is it better to freeze eggs or embryos?

Embryos have slightly better survival and success rates, because they have already passed the fertilization test. Freezing eggs loses a few at thaw and a few more at fertilization.

But embryos need sperm now, from a partner or a donor, and they can raise legal issues if a relationship ends. Eggs keep all your choices open. If you have a partner you plan to have children with, embryos are a good option. If not, eggs are usually the better fit.

Does egg freezing hurt, and what are the side effects?

The shots sting a little but are done with tiny needles. The retrieval itself is done under sedation, so you feel nothing, and it takes about 20 to 30 minutes.

Common side effects during the 10 to 12 days of shots are bloating, sore breasts, mood swings, and headaches. Cramping and spotting are normal for a day or two after retrieval. A serious reaction called OHSS (ovarian hyperstimulation syndrome) happens in about 1% to 5% of cycles, and modern protocols have made it much rarer.

Does freezing eggs use up eggs I would need later?

No. Every month your body starts to ripen a group of eggs, and all but one normally die off. Fertility drugs simply rescue that whole group instead of letting them go to waste.

Egg freezing does not lower your ovarian reserve or bring on early menopause. You can still get pregnant naturally after freezing.

Is egg freezing worth it at 40?

It can be, but expectations need to change. At 40, each mature egg has roughly a 3% to 9% chance of leading to a live birth, so you may need 30 or more eggs for solid odds. Most 40-year-olds get fewer eggs per cycle, so that often means several cycles.

An AMH test and antral follicle count will tell you fast whether multiple cycles are realistic. Some people at this age choose embryo freezing or trying to conceive now instead.

Do I need more than one egg freezing cycle?

Many people do. Around half of patients need two or more cycles to bank enough mature eggs, and it is more common after age 35 or with a low AMH.

Doing a second cycle back-to-back is safe and common. Ask your clinic for your mature egg count after the first retrieval, then compare it to your target number before deciding.

Are babies born from frozen eggs healthy?

Yes. Thousands of births from frozen eggs have been tracked, and there is no rise in birth defects, chromosome problems, or growth issues compared with babies from fresh eggs or natural pregnancy.

The fast-freezing method called vitrification protects the egg from ice crystals, which was the main risk with older slow-freeze methods.

What AMH level is good for egg freezing?

An AMH above about 1.5 ng/mL usually means a normal response and a decent egg haul. Between 1.0 and 1.5 is lower but still workable. Under 1.0 ng/mL often means fewer eggs per cycle and likely more than one cycle.

AMH predicts how many eggs you will get, not their quality. Age drives quality. A 30-year-old with low AMH still has better eggs than a 40-year-old with high AMH.

How long does the egg freezing process take from start to finish?

About two to four weeks once your cycle starts. The stimulation shots run 10 to 12 days, with 4 to 6 short monitoring visits for blood tests and ultrasounds. The retrieval happens about 36 hours after a final trigger shot.

Add a few weeks before that for testing, consults, and insurance approval. Most people take just one day off work for the retrieval and feel normal in a day or two.

Are frozen eggs as good as fresh eggs in IVF?

Almost. Fresh eggs still have a small edge, because about 8% to 10% of frozen eggs do not survive thawing. After that step, frozen and fresh eggs fertilize and grow into embryos at similar rates.

The bigger factor is age. Eggs frozen at 30 and used at 40 behave like 30-year-old eggs, which is exactly why people freeze them.