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Ovulation Calculator
Find your fertile window for family planning
Calculate Your Fertile Window
21 days28 days (avg)35 days
Important: This calculator provides estimates based on average cycle patterns. Actual ovulation can vary. This tool should not be used as a method of birth control or as a substitute for medical advice. Consult a healthcare provider for fertility planning.
When to See a Doctor
If you've been trying to conceive for 12 months (or 6 months if you're over 35) without success, consider scheduling a fertility consultation. A healthcare provider can help identify any underlying issues and discuss your options.
Learn about fertility planning in your 30s