Pregnancy Calculator

The estimated due date (EDD) is the date that spontaneous onset of labor is expected to occur.The due date may be estimated by adding 280 days ( 9 months and 7 days) to the first day of the last menstrual period (LMP). This is the method used by "pregnancy wheels". The accuracy of the EDD derived by this method depends on accurate recall by the mother, assumes regular 28 day cycles, and that ovulation and conception occurs on day 14 of the cycle. Use of the LMP to establish the due date may overestimate the duration of the pregnancy, and can be subject to an error of more than 2 weeks [5-7].

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Expected Date of Delivery Calculator - 1

This Calculator gives

• Your next menstrual period
• Your next most fertile period
• Estimated Due Date if you Conceived
• Period of gestation

Depending on the date of your first day of last Menstrual period and your cycle length.

Expected Date of Delivery Calculator - 2

This Calculator gives

• Estimated Due Date
• Gestational age of baby
• Estimated date of conception

Last Menstrual Period: (MM/DD/YYYY format)
Average Length of Cycles: (22 to 45) (defaults to 28)
Average Luteal Phase Length: (9 to 16) (defaults to 14)
Estimated Conception:
Estimated Due Date:
Estimated Fetal Age: