Free Cycle Tools
Evidence-based calculators to help you understand your menstrual cycle, fertility, and pregnancy. No sign-up required.
🩸
Period Calculator
Predict your next 6 periods based on your cycle length and last period date. Plan ahead with confidence.
Use calculator →🥚Ovulation Calculator
Estimate your fertile window and ovulation day. Useful whether you're trying to conceive or avoid pregnancy.
Use calculator →👶Due Date Calculator
Estimate your baby's due date based on your last period or conception date. Week-by-week pregnancy timeline.
Use calculator →Want personalized tracking?
Sign up for Meowa to track your cycle, log symptoms, get AI-powered advice, and build a complete picture of your menstrual health.
Start tracking free