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Calculate future menstrual period dates, estimated ovulation windows, fertile days, and 6-month cycle forecasts with iCal calendar export capabilities.
Scenario: Forecasting next period and fertile days for an LMP of August 1, 2026 with a 28-day cycle.
LMP: 2026-08-01, Cycle Length: 28 Days, Period Duration: 5 Days.
Next Period: Aug 29 – Sep 2 | Estimated Ovulation: Aug 15 | Fertile Window: Aug 10 – Aug 16.
Calculates anticipated period dates, ovulation, and fertile window span.
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Cycle and ovulation predictions are mathematical estimates based on average cycle lengths. Actual ovulation dates vary due to stress, illness, and hormonal fluctuations. Do NOT use this tool for natural family planning contraception or medical diagnostics.
