Pregnancy
An estimate, not a diagnosisWhen was the baby most likely conceived?
Enter your due date — no sign-up needed.
An estimated window, not an exact day
There's no way to know the exact day of conception for sure — only a likely window based on the due date.
Estimated by counting back: 266 days (38 weeks) before the due date, with a ±3-day window for natural variation in ovulation. Irregular cycles, or cycles longer or shorter than 28 days, shift this result. The result isn't saved anywhere.
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Create your free account to follow your journey on the website and in the app. This result is not saved automatically.
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