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Tool: Ovulation Calculator — 免費線上計算機 | HomeCalcPro | 列印時間:
健康與健身塑形Fertility隱私至上
Ovulation Calculator — 免費線上計算機 | HomeCalcPro
Ovulation Calculator精準試算，提供行業標準公式與即時測算結果。
Parameters & Body Metrics
Health & Fitness Targets
Evidence-BasedPrimary Target
0
Calculated for your body parameters
Metric 1—
Metric 2—
Health Guidelines:
Enter 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).
Real Project Example
28-Day Cycle Starting on October 1
Calculating ovulation date and peak fertile window.
Sample Project Inputs:
LMP Date:October 1
Cycle Length:28 Days
Step-by-Step Calculation:
- 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.
Calculated Answer:Ovulation on October 15 (Fertile Window: October 10–15).
Knowledge Base
常見問題解答 (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.