Free Conception Calculator

Estimate your most likely conception date range.

Conception can only happen around ovulation, generally within a day of the egg's release, though the fertile window (when intercourse could lead to conception) is wider due to sperm survival time.

Frequently Asked Questions

How wide is the conception window?
We show roughly a 2-day window around estimated ovulation, since the egg is viable for about 12-24 hours after release.