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Tool: Ovulation Calculator — Gratis Online Rekenmachine | HomeCalcPro | Afgedrukt op:
Ovulation Calculator — Gratis Online Rekenmachine | HomeCalcPro
Nauwkeurige en directe berekeningen met standaardformules voor Ovulation Calculator.
Parameters & Body Metrics
Health & Fitness Targets
Evidence-BasedEnter your parameters above to compute your target metrics.
Ovulation & Fertile Window Formula
Transparent mathematical methodology explained in plain English.
Ovulation Date = Last Menstrual Period (LMP) + (Cycle Length - 14 Days) | Fertile Window = Ovulation - 5 Days to + 1 DayCalculates the luteal phase (typically 14 days before the next period starts) and accounts for the 5-day lifespan of sperm and 24-hour viability of the egg.
Variables Explained:
- First Day of Last Period (LMP): Date when your most recent menstrual cycle began.
- Average Cycle Length (Days): Typical days between period starts (default 28 days, range 21–35 days).
28-Day Cycle Starting on October 1
Calculating ovulation date and peak fertile window.
- Estimated Ovulation: October 1 + (28 - 14) = October 15.
- Fertile Window (6 Days): October 10 through October 15.
- Peak Conception Days: October 13, 14, and 15 (Day before and day of ovulation).
- Next Expected Period: October 29.
Veelgestelde Vragen (FAQ): Ovulation Calculator
Click any question below to expand quick answers, formulas, and expert tips.
How long does an egg survive after ovulation?
An unfertilized egg survives for approximately 12 to 24 hours after being released from the ovary.
How long can sperm survive inside the female reproductive tract?
Sperm can survive in fertile cervical mucus for up to 5 days, which is why intercourse days before ovulation can result in pregnancy.