For the interactive calculator, open the full CalcHealth page.
Open Full CalculatorFrequently Asked Questions
How many fertile days do I have per cycle?
You have about 6 fertile days per cycle — the 5 days before ovulation and ovulation day itself.
Calculate your 6-day fertile window. Find the best days to try for a baby based on your cycle.
For the interactive calculator, open the full CalcHealth page.
Open Full CalculatorYou have about 6 fertile days per cycle — the 5 days before ovulation and ovulation day itself.