Ovulation Calculator
Ovulation date, fertile window, next period from LMP and cycle length
Average is 28 days (range: 21–45 days)
Ovulation Date (estimated)
Friday, 22 May 2026
Fertile Window Start
Sunday, 17 May 2026
5 days before ovulation
Fertile Window End
Saturday, 23 May 2026
1 day after ovulation
Next Expected Period
Friday, 5 June 2026
Fertile Window (best days to conceive)
Sun
17 May
Mon
18 May
Tue
19 May
Wed
20 May
Thu
21 May
Fri
22 May
Peak
Sat
23 May
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