Pregnancy Due Date Calculator

Use this calculator to determine your Pregnancy Due Date at 40 weeks.

  • Pregnancy starts from the First Day of Last Period, also known as Last Menstrual Period (LMP). This is your most recent period.
  • Full term pregnancy is 40 weeks (or how long you will be pregnant for).

If my last period was Mar 21, 2023 when is my due date?

Your Baby's Due Date:

December 28, 2023
Which is a Thursday

Gestational Age Using Due Date

Calculate Possible Due Dates from Nearby Last Period Dates: