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

Find Your Pregnancy Chances in 60 Seconds

Pregnancy Chance Calculator

Most Popular Tools

Pregnancy Chance Calculator

Calculate your overall chances of conception month by month.

Pregnancy Probability Calculator

Find your core probability based on exact intercourse timing.

Pregnancy Odds Calculator

Determine the risk or odds ratio based on contraceptive methods.

Ovulation & Fertility Tools

Fertile Window

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

Late Ovulation

Adjust your timelines if your cycle is running behind schedule.

AI Predictor

Use advanced algorithms to predict complex irregular cycles.

Pregnancy Timeline Tools

Due Date

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

Week Calculator

Track exactly how many weeks along you are right now.

Implantation Date

Estimate when the embryo securely attaches to the uterine wall.