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Pregnancy CalculatorOvulation CalculatorMenstrual Cycle CalculatorMenstrual Cycle and Fertility CalendarPeriod Calculator

Calculate Conception Gestation & Due Dates   

The first day of your last menstrual period(LMP):

Month:      Day:       Year: 

Menstrual cycle length: 


Pregnancy Due Date

In human beings, pregnancy lasts an average of about 40 weeks from the start of the woman's last menstrual period. The date near which a pregnant woman is expected to give birth, known as the "due date".
How to calculate due date:

An average human pregnancy lasts for about 280 days or 40 weeks from the date of the last menstrual period (LMP). An estimated due date(EDD) can be calculated by following steps 1 through 3:

1.You need to determine the first day of your last menstrual period.
2. Knowing your menstrual cycle length. The length of a woman menstrual cycle is calculated by the number of days between one period and the next. Cycles range from 21 to 40 days or more, with an average of around 28 days.
3.Enter the date and menstrual cycle length, Click the button, You'll get the calculation.
Top Use:    Calculate Pregnancy Due Date - LMP:2019-3-13  Menstrual cycle length:45

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