AkousaOvulation Calculator
Calculate your ovulation date, fertile window, and next period from your last menstrual period and cycle length.
Your cycle is 28 days
2-10 days
About Ovulation Calculator
The Ovulation Calculator estimates your most likely ovulation day and fertile window based on the first day of your last menstrual period (LMP) and your average cycle length. Ovulation typically occurs 14 days before the next period, and the fertile window spans 6 days — 5 days before ovulation through the day after.
Enter the first day of your last menstrual period and your average cycle length (21–35 days, default 28). Click Calculate to see your estimated ovulation date, fertile window, next period date, and potential due date if conception occurs.
This calculator is for informational purposes only and does not constitute medical advice. Consult a healthcare professional for fertility guidance. Cycle lengths vary and these are estimates only.
About Ovulation Calculator
The Ovulation Calculator estimates your most likely ovulation day and fertile window based on the first day of your last menstrual period (LMP) and your average cycle length. Ovulation typically occurs 14 days before the next period, and the fertile window spans 6 days — 5 days before ovulation through the day after.
How to Use
Enter the first day of your last menstrual period and your average cycle length (21–35 days, default 28). Click Calculate to see your estimated ovulation date, fertile window, next period date, and potential due date if conception occurs.
Common Use Cases
- Tracking the most fertile days in your cycle to plan or avoid pregnancy
- Understanding your personal menstrual cycle patterns
- Estimating ovulation when cycles are irregular
- Planning ahead for the next period date
- Calculating a potential due date if conception occurs