Enter your age (and partner’s) to see your pregnancy chance per cycle and per act, how many cycles it may take to conceive, and when it’s reasonable to seek help.
Add optional factors—height & weight (for BMI), work hours, cigarettes, and alcohol—to refine estimates. You’ll also get estimated egg count, infertility chance, miscarriage & genetic risks, and ART success rates (IVF, IUI, egg freezing). Results are estimates, not medical advice.
Pregnancy Chance per Cycle
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0.00% per random intercourseKey Fertility Metrics
This estimation does not replace professional medical advice. Always consult a healthcare provider.
Understanding Your Results with our new Fertility Calculator
Fertility can be complicated, especially when age is a major factor. Our new Fertility Calculator gives you an overview of your likely chances of getting pregnant, how many cycles it might take, and how your egg supply may look at your current age. It also includes potential risks linked to age alone, and broad success rates if you were to consider assisted reproductive treatments like IVF or egg freezing.
Pregnancy Chance per Random Intercourse
This number shows how likely it is that you might conceive from a single, untimed act of intercourse. While it’s often lower than many people expect, it reflects real-world research showing that even healthy couples rarely get pregnant from just one casual encounter.
Pregnancy Chance per Cycle
Instead of looking at just one attempt, this figure estimates your chance of conceiving across a whole menstrual cycle. This estimate is a lot more reliable than a single-attempt calculation if you are frequently having intercourse, as it’s based on collections of peer-reviewed science that takes advantage of the law of large numbers.
Estimated Number of Cycles to Get Pregnant
Here, you’ll see about how many cycles you may need before achieving a pregnancy, based on that per-cycle chance. Some people conceive more quickly than expected, others take longer, so this value is really just a guide and should never be taken as a guarantee.
Estimated Egg Count by Age
Women have a set number of eggs, which gradually declines across the years. The calculator uses a model to estimate how many eggs you might have left. Although it can’t show your actual personal count, it can help explain why chances of pregnancy naturally fall over time as age goes up.
Risks
Age alone brings certain fertility-related risks, and this section looks specifically at numbers driven by how old you are:
- Miscarriage: Becomes more common as age increases.
- Genetic Conditions: Higher chances in later years, especially if you’re beyond your mid-30s.
- Infertility: Easier to conceive before 35, more challenging afterward. As you age, your chance of becoming infertile increases.
- When to Seek Help: If you’re under 35, waiting about a year of trying may be fine; if older, many guidelines suggest acting sooner.
Assisted Reproductive Technologies (ART) Success Rates
If natural attempts prove difficult, treatments like IVF, IUI, or egg freezing may come into play. The calculator gives rough success rates by age:
- IVF (in vitro fertilization): More effective than trying naturally, but still drops as women get older.
- IUI (intrauterine insemination): Less invasive but often has lower success rates compared to IVF.
- Egg Freezing: Can preserve fertility for future use, yet strongly tied to how old you are when the eggs are frozen.
Lifestyle Factors
Beyond age, the calculator also takes basic details like your smoking habits, alcohol intake, or weekly work hours. Studies link heavy smoking and high stress to lower fertility, while moderate drinking can sometimes have a milder effect.
Final Thoughts
Every individual’s fertility journey can be unique. These numbers won’t predict precisely what will happen, but they do offer a realistic sense of how age and certain lifestyle details might affect your chances. If your results raise any concerns or you’ve been trying longer than expected, it may be time to reach out to a healthcare professional for personalized advice and options.
Frequently Asked Questions
In your early-to-mid 20s, the chance of conceiving each cycle is roughly 25–30 %. From the early 30s the monthly chance gradually drops, reaching about 15 % by age 35. The steepest decline begins after 37; by 40 the per-cycle odds fall to around 8 %, and to 2–3 % by 44. The calculator uses peer-reviewed age-specific fecundability curves to reflect this year-by-year slide.
The 35 cut-off was set decades ago when genetic testing technology was less precise; risks (e.g., chromosomal abnormalities, miscarriage) rise steadily rather than in one jump. Think of 35 as a guideline that flags a faster rate of decline—not an automatic fertility cliff. The calculator treats age as a continuum, so a birthday doesn’t suddenly halve your odds.
Yes, but more gently. Sperm count and DNA integrity decline from the early 40s, trimming conception odds and slightly raising miscarriage risk. If you enter the male partner’s age, the calculator applies established adjustment factors so couples get a combined, age-balanced estimate.
Anti-MĂĽllerian Hormone (AMH) is a good snapshot of egg quantity, but egg quality still tracks strongly with age. A high AMH at 38 may predict a better response to IVF stimulation, yet natural conception hinges on chromosome quality, which lab tests can’t fully capture. Use AMH to guide medical decisions, but don’t rely on it to “cancel” age effects.
Healthy weight, moderate exercise, no smoking, limited alcohol and a nutrient-dense diet can preserve ovarian function for a little longer—but they cannot halt the underlying genetic ageing of eggs. Think of lifestyle as fine-tuning the odds within your age band rather than resetting the clock.
Our age curves assume regular ovulation. With PCOS or cycles longer than 35 days, cycle-specific odds vary widely. The calculator still gives a useful age baseline, but pairing it with ovulation tracking (BBT, OPKs, ultrasound) will produce a more personalised forecast.
Hormonal contraception pauses ovulation but doesn’t “store” eggs for future use—the genetic ageing process continues silently. Most women resume their baseline fertility within 1–3 months of stopping the pill, matching others of the same age.
Timing intercourse, addressing modifiable factors (smoking, BMI, thyroid levels), or using oral ovulation-induction meds can boost natural odds before jumping to IVF. Assisted options scale up: IUI first, then IVF, and finally donor eggs if needed. A fertility specialist can tailor a pathway based on age, ovarian reserve and how long you’ve been trying.