Calculate the day you ovulate.
Number of Days in your Cycle:
(28 is an average, in case you're not sure of your cycle length.)
Enter the first day of your last menstrual period.
Month:
January
February
March
April
May
June
July
August
September
October
November
December
Day:
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
31
Year:
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
Your Ovulation Date: