Santé des Femmes • Pregnancy & Women’s Health
✓ Medically Reviewed by Dr. Priya Sammani (MBBS, Medical Officer)
✓ Medically Reviewed by Dr. Priya Sammani (MBBS, Medical Officer)
Period Calculator
Free Period Calculator & Cycle Tracker. Enter your last period date and cycle length to predict your next 3 periods, ovulation day, and fertile window.
🧬 My Health Data Edit Metrics ▾
📈 Result Spectrum
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Period Calculator
Normal
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❓ Frequently Asked Questions (FAQ)
What is a normal menstrual cycle length?
Clinically, a regular adult menstrual cycle ranges from 21 to 35 days, with 28 days being the population average.
When should I see a doctor for irregular periods?
Consult a physician if your cycles are consistently shorter than 21 days, longer than 35 days, or if you miss 3 consecutive periods without pregnancy.
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⚠️ Important: Medical Disclaimer: This clinical calculator provides educational estimates and does not replace a consultation with a qualified physician.