Ovulation Calendar
Track your fertile window, ovulation day, and menstrual cycle visually.
Your Cycle Settings
21 days45 days
2 days10 days
Legend
Menstrual Period
Fertile Window
Ovulation Day
Luteal Phase
Ovulation typically occurs 14 days before your next period. The fertile window spans 5 days before ovulation plus ovulation day. Source: ACOG (acog.org)
September 2026
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Enter your last period date to see your cycle on the calendar.
Educational Disclaimer: This calendar is an estimate based on average cycle patterns. Actual ovulation varies by individual. This tool is not suitable for contraception or fertility treatment planning. Consult your OB-GYN for personalized guidance. Source: ACOG (acog.org) — Fertility Awareness Methods.