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Menstruatiecyclus Calculator – Periode en Eisprong Tracker

Calculate menstrual cycle phases and predict next period

This calculator provides estimates based on average cycles. Consult a healthcare provider for personalized medical advice.
Calculate Cycle

Hoe te Gebruiken

  1. Enter the first day of your last period
  2. Enter your average cycle length (default: 28 days)
  3. Enter your average period duration (default: 5 days)
  4. Click calculate to see predictions

Menstrual Cycle Phases

The menstrual cycle has four phases: menstrual, follicular, ovulation, and luteal.

PhaseDaysDescription
Menstrual1-5Period bleeding occurs
Follicular6-13Uterine lining rebuilds
Ovulation14Egg is released
Luteal15-28Body prepares for possible pregnancy

Why Track Your Cycle

  • Predict periods for planning
  • Identify fertile days for conception or contraception
  • Monitor cycle irregularities
  • Understand your body's patterns

Veelgestelde vragen

How accurate is this calculator?
The calculator provides estimates based on average cycle patterns. Actual dates may vary based on individual factors.
What is a normal cycle length?
Normal cycles range from 21-35 days, with 28 days being average. Cycle length can vary from month to month.
When is the fertile window?
The fertile window is typically 5 days before ovulation through 1 day after, when pregnancy is most likely.

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