Pregnancy Due Dates Calculator
Calculates pregnancy dates from last period, gestational age, or date of conception.
INSTRUCTIONS
- Enter date of last menstrual period, gestational age (on today's date or other ultrasound date), date of conception, OR estimated due date to estimate the other dates.
- Only EDD is affected by cycle length ≠28 days when calculating from LMP, EGA, and EDC.
- When starting with EDD, all results change depending on cycle length.
Result:
Please fill out required fields.
Dr. Frank A. Chervenak
About the creator
Leading expert on the Pregnancy Due Dates calculator:
Frank A. Chervenak, MD, is a professor, chief OB-GYN and chairman of the Department of Obstetrics and Gynecology at the New York Presbyterian Hospital. He is the author of “How Accurate Is Fetal Biometry in the Assessment of Fetal Age”, a comparative study of the gestational age prediction equation for singletons, twins and triplets with other pregnancy prediction formulas. Dr. Chervenak has published 250+ papers and co-authored/edited textbooks on topics including ultrasound and ethics in obstetrics and gynecology and physician leadership.
To view Dr. Frank A. Chervenak's publications, visit PubMed
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