Ovulation is the process of releasing an egg, and it marks the time when you're most fertile. For a typical 28-day cycle, ovulation usually occurs about 14 days before the next period starts. By entering the end date of your last period and your average cycle length, this calculator helps estimate your ovulation and fertile window.
This tool also considers the survival time of both eggs and sperm to provide a fertile window around ovulation (±2 days). It's helpful not only for those trying to conceive but also for understanding timing in general reproductive health.
Please note that cycle irregularities and individual health conditions may affect actual ovulation timing. This tool is for general reference only and does not replace medical advice.
Ovulation typically occurs around 14 days after the start of your period. This tool estimates your next ovulation based on your last period end date and average cycle length.
We calculate a 6-day fertile window including sperm lifespan, with the 2 days before and day of ovulation being the most fertile.
For more accurate predictions, you may also monitor your body temperature, cervical mucus, or use LH tests. This calculator is for general planning.