Further Research
For more information on the science behind the Billings Ovulation Method® please visit:
Scientific Resource Material for Medical Professionals (PDF)
Trials of the Billings Ovulation Method®
Method Resources
You can use any of the following resources to begin charting using the Billings Ovulation Method®. We strongly advise you to consult with a trained Billings Ovulation Method®instructor to ensure correct application of the Billings Ovulation Method®.
Order a Paper Record Chart & Stamps
Personal Record Chart for Download English and Spanish (Excel)
Personal Record Chart (downloadable paper chart)
Approved Charting Apps
The following three charting apps are approved by WOOMB International (World Organisation Ovulation Method Billings) as offering accurate and current information about using the Billings Ovulation Method®:
