What the tool does, how to run it, and what to expect from the result.
Pregnancy is dated from the first day of the last period, and conception usually happens about two weeks later, at ovulation, which puts it 266 days (38 weeks) before the due date. A due date of June 1, 2027 means conception around Tuesday, September 8, 2026, most likely between September 6 and 10. From a last period, the estimate moves with cycle length: ovulation is about 14 days before the next period.
A quick way to understand who this helps, what it solves, and where it connects next.
Anyone planning dates, deadlines, shifts or payroll.
Using the conception calculator without installing anything or signing up.
Short answers for the questions people usually have before trying a utility like this.
Within a few days at best. Ovulation varies from cycle to cycle, and sperm can survive up to 5 days, so intercourse up to 5 days before ovulation can lead to conception. An early ultrasound (before 14 weeks) dates a pregnancy most precisely.
No. When possible dates are close together, a calculation cannot separate them; only a DNA paternity test can.
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