🌙 Ovulation Calculator
Estimate your most fertile days this cycle.
How it works
- For a typical cycle, ovulation is estimated about 14 days before the next period.
- Your fertile window usually spans a few days before ovulation and the ovulation day itself.
- Use this with cycle tracking, not as your only fertility or contraception method.
Common questions
How accurate is an ovulation calculator?
It is an estimate. Stress, illness and irregular cycles can shift ovulation. Ovulation tests can help confirm.
Can I use this for birth control?
No. Period and ovulation tools are not reliable contraception.