How precise is the conception date?

It assumes ovulation around day 14 of a 28-day cycle, so it is an estimate. Actual conception can vary with cycle length and ovulation timing.

Conception Date Calculator

Estimate when conception likely occurred and the fertile window, working backward from a due date or last menstrual period.

How precise is the conception date?: It assumes ovulation around day 14 of a 28-day cycle, so it is an estimate. Actual conception can vary with cycle length and ovulation timing.

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