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Calculate your ovulation date and fertile window. 3-month fertility forecast based on your cycle.
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Get an ovulation test kit for medical-grade accuracy. Combines with the calculator for the best results.
This calculator estimates ovulation based on average cycle patterns. Ovulation typically occurs 14 days before your next period. For medical-grade accuracy, use ovulation test strips or consult your doctor.
The fertile window is typically 5 days before ovulation through 1 day after. The highest chance of conception is the 2 days before and the day of ovulation.
Ovulation Calculator is part of BriskTool's collection of free online tools. All processing runs entirely in your browser for maximum privacy and speed.