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How many eggs should I freeze for a reasonable chance of pregnancy?

At age 35, freezing 10-15 mature eggs gives approximately 70-80% chance of at least one live birth. At 38, you may need 15-20 eggs for similar odds. At 40+, you might need 20-30 eggs. Younger eggs have higher survival rates after thawing and better fertilization rates.

Last updated: December 2025

Egg Freezing Calculator

Estimate how many eggs you might need to freeze for a reasonable chance of future pregnancy. This calculator helps you understand the numbers behind egg freezing and set realistic expectations.

Your Situation

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5 eggs20 eggs40 eggs

Egg Freezing by Age

AgeEggs NeededTypical CyclesSuccess Rate*Egg Quality
Under 3510-15170-80%Excellent
35-3715-201-260-70%Very Good
38-4020-252-340-50%Good
40-4225-30+3-425-35%Fair
43+30+4+10-20%Lower

*Estimated chance of at least one live birth when using all frozen eggs

Factors That Affect Success

Age at Freezing

The most important factor. Younger eggs have higher quality and better freeze/thaw survival rates.

Number of Eggs

More eggs = better odds. Not all eggs survive thawing, fertilise, or become viable embryos.

Lab & Freezing Method

Vitrification (flash-freezing) has higher survival rates than slow freezing. Lab expertise matters.

Ovarian Reserve

AMH levels and antral follicle count predict how many eggs you'll get per cycle.

Track Your Egg Freezing Journey

Use IVFPath to track your egg freezing cycles, medications, and results all in one place.

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Frequently Asked Questions

Medical Review: IVFPath Medical Content Team • Last reviewed: December 2025

Disclaimer: This calculator provides general estimates based on published research. Individual results vary significantly. Consult with a fertility specialist for personalised projections based on your specific ovarian reserve and health factors.