Ovulation Tracker
HealthShow fertile window from menstrual cycle
Ovulation Tracker
Track your fertile window and ovulation date based on your menstrual cycle.
Normal range: 21–35 days
Standard cycle calculation
Ovulation is estimated 14 days before your next period, with a 6-day fertile window.
Menstrual Cycle Phases
Menstrual
Days 1–5
Low fertility
Follicular
Days 6–13
Increasing
Ovulation
Days 14–15
Peak fertility
Luteal
Days 16–28
Decreasing
• Estimates are based on average cycle patterns — individual cycles vary.
• This tool is not suitable as a contraceptive method.
• Consult healthcare providers for fertility planning or concerns.
Your Estimate
Enter your last period date and cycle length to calculate your fertile window.
How this calculator works
Enter amount
Type the figures or details you want to calculate.
Choose options
Select the calculator settings that match your situation.
View estimate
Review the expected result before making a decision.
Built around Kenyan decisions
Tools are designed for local money, tax, utility, planning and health needs.
Local focus
Kenya
Access
Free
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