MDCalc

Pregnancy Due Dates Calculator

Calculates pregnancy dates from last period, gestational age, or date of conception.

  • 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.
days
Dates to enter
"Last menstrual period" should be first day of LMP; EGA on other date can be taken from a past ultrasound

Result:

Please fill out required fields.
Advice

Use to track and estimate pregnancy.

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