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A project of the U.S. Department of Health and Human Services Office on Women's Health

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A project of the U.S. Department of Health and Human Services Office on Women's Health
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womenshealth.gov

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Home > A-Z Health Topics > Pregnancy > Mom-to-be tools > Ovulation and due date calculator

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Ovulation and due date calculator

Use this calculator to find out when you are most likely to become pregnant and to estimate your due date should conception occur.

Step one

Enter the first day of your last menstrual period below:

Step two


To determine the number of days in your cycle, count the days beginning with the first day of your last menstrual period (first day of bleeding) up to and including the day before your next period.

Content last updated September 27, 2010.

Resources last updated September 27, 2010.

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womenshealth.gov
A federal government website managed by the Office on Women's Health in the Office of the Assistant Secretary for Health at the U.S. Department of Health and Human Services.
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