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MATH / LINEAR REGRESSION

R Squared from Correlation Calculator

Calculate simple-linear-regression explained variance from Pearson correlation. Inspect the equation, substituted values, result, assumptions, and interpretation in one guided workspace.

  • 01 Calculated in this tab
  • 02 Values stay in this browser tab
  • 03 Use boundary

Conversion input

Known value

Filter by unit name, symbol, or code. Your current selections remain available.

Preparing the calculator...

Use boundary

Calculation path

Calculate simple-linear-regression explained variance from Pearson correlation. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.

Calculation path

R^2=r^2

What you provide

What you provide

  • Pearson correlation, using the same scenario as the other inputs
  • The stated equation, unit convention, and modelling assumption must fit your intended use

What you receive

What you receive

  • R squared from the stated equation
  • A symbolic formula plus substituted working with your values
  • Visible assumptions, field guidance, and an authoritative learning reference

Use boundary

Choose the maximum decimal places shown. This does not increase source accuracy.

This identity applies to simple linear regression with an intercept and the same paired dataset.

Use internally consistent units and retain extra precision when carrying the result into another calculation.

Reviewed reference factors

Reviewed reference factors