< WhenMyBaby Calculators...

When to Ovulation Test Calculator

Create your ovulation test days schedule for your current cycle, including when to start testing, and a chart to track your ovulation test results. Enter info about your cycle, and the start cycle day to test as per the instructions for the ovulation predictor kit (OPK) you've purchased. Or, click your cycle length from the chart below which matches your OPK's instructions.


How to calculate cycle length

Check your OV Test instructions; Can select on chart below

The number of tests provided with your ovulation predictor
Doesn't match your OPK Instructions?
Get Next chart...
Average
Cycle Length
Start Testing
on Cycle Day #
21 5
22 5
23 6
24 7
25 8
26 9
27 10
28 11
29 12
30 13
31 14
32 15
33 16
34 17
35 18
36 19
37 20
38 21
39 22
40 23