Cycle Length Calculator

Calculate your average menstrual cycle length and track cycle regularity. Get insights about your cycle patterns and predict your next period.

By Peony Health Team
Track multiple cycles
Predict next period
Analyze regularity

About This Cycle Length Calculator

Our cycle length calculator helps you track and analyze your menstrual cycle patterns over time. By entering your period start dates for at least 3 cycles, you can calculate your average cycle length, assess cycle regularity, and predict your next period. This tool is designed to help women understand their cycle patterns and identify when to seek medical advice for irregularities.

Track Your Cycle Lengths

Enter the start date of each period for at least 3 cycles. The last period should be your most recent one.

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Medical Disclaimer: This tool provides educational estimates based on established formulas and is not intended as medical advice. Individual results may vary. For personalized guidance, consult with healthcare professionals through our platform.