Conception Date Calculator
Estimates plausible conception timing from LMP plus cycle assumptions about when ovulation occurs relative to the next expected period.
Populate LMP to estimate a plausible conception timeframe.
Important usage notes & limitations
Reproductive timelines interact with contraception cessation, PCOS phenotype, transgender hormone therapy intensity, low body-fat athletic amenorrhea, and perimenopause. Hormonal contraception intentionally suppresses natural ovulatory signals until washout stabilization — calendar methods become meaningful only once cycles resume reliably.
See also: Pregnancy Due Date Calculator · Women's health calculators hub.