Regression Calculator

Fit data to linear, polynomial, or exponential curves online. Calculates regression equations, R2, predicted values, and residuals plots.

⚡ Interactive Calculation Engine Active

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How to Use Regression Calculator

  1. Paste your numeric X and Y coordinate data or upload a CSV file.
  2. Select the regression fit model: Linear, Polynomial (up to degree 4), or Exponential.
  3. Input an optional forecast X value to predict future Y estimates.
  4. Inspect the scatter curve fit and download calculations summaries.

Regression Fits and Curve Modeling

Regression analyzes dependencies between variables. The R-squared metric represents the proportion of variance explained by the model.

Frequently Asked Questions

When should I select exponential regression?
Use exponential regression when the rate of change is proportional to the current value, such as population growths or capacitor discharge loops.