Ovulation Calculator
Predict your ovulation date based on your cycle length. Ovulation typically occurs on cycle day (length − 14).
How to Use the Ovulation Calculator
Predict your ovulation date based on your cycle length. Ovulation typically occurs on cycle day (length − 14). Enter your information in the form above and get instant results.
Medical Disclaimer: This tool is for informational purposes only. Always consult your healthcare provider for medical advice.
Frequently Asked Questions
When do I ovulate?
Ovulation typically occurs about 14 days before your next period. For a 28-day cycle, that is day 14. For a 32-day cycle, it is approximately day 18.
How accurate is ovulation prediction?
This calculator provides an estimate. Ovulation can vary by several days each cycle. LH tests (OPKs) provide more precise confirmation.
What if my cycle is irregular?
Use the average of your last 3–6 cycle lengths. If cycles vary greatly, consult a healthcare provider.