Ovulation Calculator

Cycle 1 fertile window

Tue, Oct 27 – Mon, Nov 2

Next period

Sun, Nov 15

Cycle 2 fertile window

Tue, Nov 24 – Mon, Nov 30

Next period

Sun, Dec 13

Cycle 3 fertile window

Tue, Dec 22 – Mon, Dec 28

Next period

Sun, Jan 10

Assumes ovulation about 14 days before your next period. Accuracy drops with irregular cycles, and this should not be used as birth control.