Ovulation
Fertility window calculator
Note: This calculator provides estimates. Ovulation timing can vary. Use ovulation tests for more accurate results.
Frequently Asked Questions
When does ovulation occur?
Ovulation typically occurs 14 days before your next period. For a 28-day cycle, this is around day 14. For a 30-day cycle, around day 16. The timing varies based on your cycle length.
What is the fertility window?
The fertility window is the 6-day period when pregnancy is possible: 5 days before ovulation and the day of ovulation. Sperm can survive up to 5 days, while the egg survives 12-24 hours.
How accurate is the ovulation calculator?
The calculator provides estimates based on average cycle patterns. Actual ovulation can vary by 1-2 days. For precise timing, use ovulation predictor kits (OPKs) or track basal body temperature.