Obstetrics
Pregnancy Due Date from Last Menstrual Period calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
year
Allowed range: 2000–2040 year
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month
Allowed range: 1–12 month
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day
Allowed range: 1–31 day
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Result
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Clinical inputs
- Year of the last menstrual periodAccepted range: 2000 to 2040
- Month of the last menstrual periodAccepted range: 1 to 12
- Day of the last menstrual periodAccepted range: 1 to 31
Primary source
Committee on Obstetric Practice. Committee Opinion No. 700: Methods for Estimating the Due Date. Obstet Gynecol. PMID: 28426621. The Naegele estimate adds 280 days to the first day of the last menstrual period. The result is that calendar date as YYYYMMDD. (2017)
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