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Period Tracker & Calculator
Next period date · Fertile window · Cycle length
2 days5 days8 days
❓ Frequently Asked Questions
How accurate is period tracking? ▾
Period tracking is an estimate based on your average cycle length. Cycles vary due to stress, diet, health conditions. For contraception, always use medical methods.
What is the fertile window? ▾
The fertile window is typically 5 days before ovulation and 1 day after. Ovulation usually occurs 14 days before the next period starts.
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