Note: Sperm can live up to 5 days, so intercourse a few days before ovulation can also lead to pregnancy.
How to Use This Fertility Calculator
Enter the first day of your last menstrual period and your average cycle length. The calculator will show your most fertile days — when you're most likely to get pregnant — based on ovulation timing.
Why Track Fertility?
Understanding your fertile window increases your chances of conception. This tool uses the ovulation method, typically occurring 14 days before your next period.
Frequently Asked Questions (FAQs)
How accurate is this calculator?
This is an estimate based on average ovulation patterns. For precise tracking, consider consulting a gynecologist.
Can I get pregnant during my period?
It’s unlikely, but not impossible. Sperm can survive for up to 5 days, and early ovulation may increase chances.
How long is the fertile window?
Typically 6 days — 5 days before ovulation and the day of ovulation.