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📐 Curve Regression
Linear / Quadratic / Exponential / Logarithmic / Power — compare by R²
Paste one X Y pair per line (space/Tab/comma separated). The tool fits several curves and reports R² to help you decide whether a straight line or a better-fitting curve should be used. Exponential / logarithmic / power models require positive data.
Data (one X Y pair per line)
About Curve Fitting Calculator
Free curve fitting calculator: fit polynomial, exponential, logarithmic and power models, compare R-squared and residuals, and find the best curve equation.
Learn more about this tool →
Linear Regression
Scatter Plot
Distribution Fitting
Time Series Forecasting
Principal Component Analysis
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