Fertility by Age Calculator
Fertility by Age
Estimate fertility potential based on age, providing probability of conception per cycle and time-to-pregnancy estimates
years
Formula
Conception Rate Per Cycle = Base Fertility Rate x Health Modifier; Annual Probability = 1 - (1 - Cycle Rate) ^ Cycles Per Year
Frequently Asked Questions
At what age does fertility start to decline significantly?
Fertility begins a gradual decline after age 30 and drops more steeply after age 35. By age 40, the chance of conceiving per cycle is significantly lower than at age 25.
Can lifestyle factors improve fertility at older ages?
Maintaining a healthy weight, avoiding smoking and excessive alcohol, managing stress, and regular exercise can support fertility at any age, though they do not fully offset age-related decline.
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