This easy-to-use ovulation calculator helps you determine your most fertile days based on your last period and cycle length. It predicts your ovulation date and fertile window, giving you a natural way to plan or prevent pregnancy. Results are based on the standard calculation where ovulation occurs about 14 days before your next period.
Ovulation Calculator
Estimate your fertile window and ovulation day based on your last period and average cycle length. This helps you plan or prevent pregnancy naturally.