Conception Calculator
Estimate your conception date from your last period.
Result
Results are estimates for general information only and are not professional advice.
Estimating conception
Conception usually occurs around ovulation, roughly two weeks before the next period. From your last period and cycle length, this calculator estimates the likely conception date and the matching due date.
Frequently Asked Questions
What is the Conception Calculator?
Estimate your conception date from your last period. It runs instantly in your browser and is completely free.
Is the Conception Calculator free and does it require signup?
Yes. Every calculator on Calculatis is 100% free with no registration, and the values you enter are never stored.
How accurate is the Conception Calculator?
It uses standard, widely-accepted formulas. Results are reliable estimates for general use and are not a substitute for professional advice.