Ovulation & Fertility Calculator
Track your cycle and discover your fertile days
days
Normal range: 21-35 days
days
Understanding Your Fertility Cycle
Menstruation
Day 1 of your cycle. Usually lasts 3-7 days.
Ovulation
Usually occurs 14 days before the next period. The egg lives 12-24 hours.
Fertile Window
5 days before ovulation + ovulation day. Sperm can survive up to 5 days.
Best Chance
Highest chance of conception: 1-2 days before ovulation.