Easy Ovulation Calculator — Find Your Most Fertile Days

Calculate your ovulation date and 5-day fertile window using your last period and average cycle length. Fast, private, and mobile-friendly.

Ovulation Calculator

Pinpoint the exact 5 days you are most likely to conceive.

Adjust your timelines if your cycle is running behind schedule.

Use advanced algorithms to predict complex irregular cycles.

Calculate your estimated due date based on LMP, conception, or IVF.

Track exactly how many weeks along you are right now.

Estimate when the embryo securely attaches to the uterine wall.