Answer honestly for the most accurate estimate
Based on published clinical data & ICMR guidelines
Frequently Asked Questions
Understanding IVF success rates and what affects your chances
The average IVF success rate in India is approximately 35–45% per cycle across all age groups. For women under 35, top clinics report 50–65% clinical pregnancy rates. India's national average is comparable to global standards, with the best centres in Delhi, Mumbai, Bangalore, and Chennai matching international success rates.
Age is the single most important factor. Women under 30 have 50–65% success per cycle. At 35–37, this drops to 34–48%. At 38–40, it's 20–35%. At 41–42, only 8–18%. Over 43, rates fall to 3–10% with own eggs. The decline is due to decreasing egg quality and quantity. Donor egg IVF (50–65% success) bypasses the age factor entirely.
Cumulative success is the total probability of achieving pregnancy over multiple cycles. If your per-cycle rate is 45%, your cumulative chance after 3 cycles is approximately 83% — much higher than a single attempt. This is why fertility specialists recommend planning for 2–3 cycles. Each additional cycle adds meaningfully to your overall chances.
ICSI significantly improves fertilisation rates, especially for male factor infertility (low count, poor motility, abnormal morphology). Fertilisation rates with ICSI are 70–85% compared to 50–70% for conventional IVF. For overall pregnancy rates, ICSI provides a small but meaningful advantage (+2–5%) and is now used in the majority of IVF cycles worldwide.
Both underweight (BMI below 18.5) and overweight/obese (BMI above 25) women have reduced IVF success. Obesity affects hormone processing, medication response, egg quality, and implantation rates — reducing success by 5–10%. A BMI of 18.5–24.9 is optimal. Even a 5–10% weight reduction in overweight patients can meaningfully improve outcomes.
AMH (Anti-Müllerian Hormone) indicates your ovarian reserve — how many eggs remain. Normal AMH (1.5–4 ng/mL) means adequate egg supply. Low AMH (below 1.5) means fewer eggs will be retrieved per cycle, reducing per-cycle success. Very low AMH (below 0.5) makes IVF challenging. However, AMH measures quantity, not quality — even with low AMH, good-quality eggs can lead to successful pregnancy.
PGT-A (Preimplantation Genetic Testing for Aneuploidies) screens embryos for chromosomal abnormalities before transfer. It improves per-transfer success by 5–10% and significantly reduces miscarriage risk. It's most valuable for women 35+, those with recurrent miscarriages, or repeated IVF failures. PGT-A also supports single embryo transfer, reducing twin pregnancy risks.
Yes, significantly. Smoking reduces IVF success rates by 5–10%. It damages egg quality, reduces ovarian reserve, impairs sperm quality and DNA integrity, and affects implantation. Male smoking also reduces fertilisation rates. Quitting at least 3 months before IVF is strongly recommended for both partners. The negative effects are dose-dependent — even light smoking matters.
Donor egg IVF has the highest success rates — typically 50–65% per cycle regardless of the recipient's age, because donor eggs come from young, healthy women (usually 21–30). This makes it an excellent option for women over 40 or those with diminished ovarian reserve. Cumulative success over 2–3 cycles reaches 80–90%. The recipient's uterine health is the primary factor.
Previous failures don't necessarily mean future cycles will fail. However, statistically, each failed cycle slightly reduces the probability of the next one succeeding — by 2–5% per failed attempt. This is because the easiest-to-resolve issues are usually addressed in earlier cycles. After 3+ failures, a comprehensive review (hysteroscopy, PGT-A, protocol change) is recommended before trying again.
Yes, modern vitrification (flash-freezing) has made FET nearly as successful as fresh transfers — and in some cases, slightly better. FET allows the uterine lining to recover from stimulation, potentially improving implantation. Success rates are typically only 2–3% lower than fresh transfers. FET is also significantly cheaper, making it the most cost-effective way to attempt pregnancy from surplus embryos.
This calculator uses published clinical data, ICMR guidelines, and aggregated outcomes from Indian and international fertility centres to provide a general estimate. Individual results can vary by ±10–15% based on specific clinic expertise, embryo quality, protocol choice, and factors not captured here. It is designed for informational purposes — your fertility specialist can provide a personalised prognosis based on your complete medical evaluation.