Tools
Period calculator
Next period, ovulation and fertile days for the next 6 months. Private: stays on your phone.
🔒 Your data stays on this device. Nothing is sent to our server, nothing is logged. You can clear it at any time.
Estimate based on an average cycle (ovulation about 14 days before the next period). It is not a contraceptive method and not medical advice. For health questions, see a doctor or midwife.