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This free pregnancy conception calculator estimates a range of conception dates based on a provided due date, last period date, or ultrasound date.
- Conception Calculator
Related Pregnancy Calculator | Pregnancy Conception...
- Pregnancy
This calculator provides an estimated pregnancy schedule...
- Conception Calculator
A Pregnancy Conception Date Calculator works by taking the expected due date (estimated based on the first day of the last menstrual period or other methods) and then subtracting approximately 266 days, which is the average duration of pregnancy from conception to birth.
Our conception calculator, also known as a reverse due date calculator, estimates when your pregnancy was conceived. When calculating conception based on the due date, we subtract 266 days (38 weeks).
This calculator provides an estimated pregnancy schedule based on the due date, last period date, ultrasound date, conception date, or IVF transfer date.
The Pregnancy Conception Calculator estimates the date of conception based on the expected due date of the pregnancy, last period date, or ultrasound date.
A conception calculator estimates when an existing or previous pregnancy was conceived. To achieve this, calculators use formulas based on the average timing of ovulation and the average length of pregnancy to estimate the date of conception.
This free online conception calculator will determine the conception date -- including the day of the week -- based on your pregnancy due date, ultrasound, or the 1st day of your last menstrual period (LMP).
