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Calculate conception day/date of conecption calculator.

Conception date calculator - calculate date/day of conception
Calculate probable period of conception

Please enter the child's birthday:


By using your child's birthday we will calculate the conception date. The day of conception will be calculated based on the duration of an average full term (267 days). Calculating the date of conception this way is more accurate than recursively applying Naegele's rule. After calculating the conception date, you will get, alongside your result, more detailed information about it and how to interpret it. In case you have access to information about the course of the pregnancy, you may enter it subsequently to readjust the calculation for accuracy.

Privacy statement: we do not collect any input.

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