Safe Days Calculator
Track your fertility window and safe days
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Enter the first day of your last period
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Typical range: 21-45 days (default 28)
Next Period:
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Fertile Window:
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Safe Days:
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Note: This calculator provides estimates only. Individual cycles may vary. Consult a healthcare provider for family planning.
Our Safe Days Calculator helps track fertility windows and identify low-risk days for conception, useful for natural family planning.
Key Features:
- Cycle Tracking– Estimates fertile and safe days based on menstrual data
- Ovulation Prediction– Highlights high-fertility window (typically days 10–17)
- Visual Calendar– Color-coded days for easy understanding.
Common Uses:
- Natural contraception or pregnancy planning
- Monitoring menstrual cycle patterns
- Identifying ovulation days for conception
- Tracking period start/end dates
How to Use:
- Enter Last Period Date and Average Cycle Length (default: 28 days).
- Toggle “Show Ovulation Window” (optional).
- Click “Calculate Safe Days”.
- View results: Next Period, Fertile Window, Safe Days, and a visual calendar.
Note: Results are estimates; consult a doctor for medical advice.
