Egg Freezing Calculator
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Success rates for those who returned to use their eggs
What this shows: Success rates among patients who used their eggs. Data from 2,891 patients (Cobo et al. RBMO 2025). Does not include natural conception or those who didn't return.
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Success rate among those who used their eggs
Important context
- Based on patients who returned to use their eggs
- Many who freeze eggs conceive naturally or don't return
- More eggs generally improve success, but no guarantees
- Younger age at freezing typically gives better outcomes
How age and egg numbers affect success
| Age at Freeze | 1–9 eggs | 10–14 eggs | 15–19 eggs | 20+ eggs |
|---|---|---|---|---|
| <35 years | 48% | 44% | 77% | 84% |
| 35–37 years | 37% | 47% | 53% | 73% |
| 38–40 years | 19% | 41% | 41% | 57% |
| >40 years | 5% | 25% | 32% | 27% |
Sources:
Cobo A et al. Is planned oocyte cryopreservation delivering? RBMO 2025;50(4):104794. (n=2,891 patients, IVIRMA Spain & NYU Langone)
Fouks Y et al. Utilization of Cryopreserved Oocytes in Patients With Poor Ovarian Response After Planned Oocyte Cryopreservation. JAMA Netw Open 2023;6(12):e2349722.
Cobo A et al. Is planned oocyte cryopreservation delivering? RBMO 2025;50(4):104794. (n=2,891 patients, IVIRMA Spain & NYU Langone)
Fouks Y et al. Utilization of Cryopreserved Oocytes in Patients With Poor Ovarian Response After Planned Oocyte Cryopreservation. JAMA Netw Open 2023;6(12):e2349722.
