🎉 Welcome to the New Cosinor.Online!

Discover powerful new features for your analysis, developed based on years of user feedback.

Available for All Users:
  • Polar Plot: Analyze the phase and amplitude of your rhythms.
  • Lomb-Scargle Periodogram: Detect dominant periods in your data.
  • Goodness of Fit Stats: Evaluate your model with R² and Correlation (R).
Exclusive Features for Registered Users:
  • Multi-Dataset Comparison: Visualize multiple Cosinor fits in a single plot.
  • Data Export to CSV: Download your results for further analysis and publications.
  • Saved Results History: Securely access and manage all your past analyses anytime.
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Circadian Rhythms and Time-Dependent Biological Processes

Biological rhythms — especially circadian (~24 h) and ultradian cycles — reflect how internal and environmental factors shape physiological processes over time. Cosinor.Online is a free, browser-based tool that helps researchers analyse such time-distributed data using the classic cosinor method: Y = M + A × cos(2π × (t – φ) / T). No installation or coding is required.

More about Cosinor.Online → Manual →
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