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Cum se calculează Menstrual Cycle

Ce este Menstrual Cycle?

A menstrual cycle calculator tracks the timing of periods, ovulation, and fertile windows based on cycle length and period duration. The average cycle is 28 days (range 21–35 days), with ovulation typically occurring 14 days before the next expected period.

Formulă

Next period = Last period start + Cycle length

Ghid pas cu pas

  1. 1Next period = Last period start + Cycle length
  2. 2Ovulation = Next period − 14 days
  3. 3Fertile window = Ovulation day ± 5 days (sperm viable 5 days; egg viable 12–24 hours)
  4. 4Luteal phase (ovulation to next period) is relatively fixed at ~14 days

Exemple rezolvate

Intrare
28-day cycle, last period 1 Jan
Rezultat
Next period: 29 Jan · Ovulation: ~15 Jan · Fertile window: 10–16 Jan
Standard cycle
Intrare
35-day cycle, last period 1 Jan
Rezultat
Next period: 5 Feb · Ovulation: ~22 Jan
Longer cycle shifts ovulation later

Întrebări frecvente

What is Menstrual Cycle?

A menstrual cycle calculator tracks the timing of periods, ovulation, and fertile windows based on cycle length and period duration. The average cycle is 28 days (range 21–35 days), with ovulation typically occurring 14 days before the next expected period

How accurate is the Menstrual Cycle calculator?

The calculator uses the standard published formula for menstrual cycle. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Menstrual Cycle calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Menstrual Cycle calculator use?

The core formula is: Next period = Last period start + Cycle length. Each step in the calculation is shown so you can verify the result manually.

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