Free tool
Ovulation Calculator
Calendar estimates assume ovulation ~14 days before your next period, which varies between people and cycles. For accuracy, combine with ovulation tests or cervical-mucus tracking. If cycles are irregular or you've been trying for over a year (or 6 months over 35), talk to your GP. General information, not medical advice.
Trying to conceive?
Our trying to conceive guide covers timing, preparation and when to see a GP, and our how long does it take article has the realistic statistics if you're feeling anxious about the wait.