Ovulation Calculator
Ovulation date, fertile window, next period from LMP and cycle length
Average is 28 days (range: 21–45 days)
Ovulation Date (estimated)
Thursday, 8 October 2026
Fertile Window Start
Saturday, 3 October 2026
5 days before ovulation
Fertile Window End
Friday, 9 October 2026
1 day after ovulation
Next Expected Period
Thursday, 22 October 2026
Fertile Window (best days to conceive)
Sat
3 Oct
Sun
4 Oct
Mon
5 Oct
Tue
6 Oct
Wed
7 Oct
Thu
8 Oct
Peak
Fri
9 Oct
This is an estimate based on average cycle patterns. Actual ovulation can vary. For accurate tracking, use ovulation predictor kits (OPK) or basal body temperature (BBT) charting. Consult a doctor for fertility concerns.
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Calculated with CalcCrack