How does the Pregnancy Conception Calculator work?

Estimate conception date from due date or last menstrual period. The result is an estimate based on the values entered.

Is this calculator medical advice?

No. This calculator is for general education and should not replace advice from a qualified health professional.

Pregnancy

Estimate conception date from due date or last menstrual period.

Estimated Conception -

Fertile Window Start -

Fertile Window End -

Formula

Estimated conception = due date - 266 days

These calculators provide estimates for general education and are not a substitute for professional medical advice.