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Correlation Coefficient Calculator

Compute the Pearson correlation coefficient r and coefficient of determination R² from summary statistics of paired data. Use it to measure the linear relationship between two variables in research or data analysis.

Sum of X values (ΣX)

Sum of Y values (ΣY)

Sum of XY (ΣXY)

Sum of X² (ΣX²)

Sum of Y² (ΣY²)

Sample Size (n)

Fill in the required fields to see your result.

Statistics

Correlation Coefficient Calculator

Compute the Pearson correlation coefficient (r) between two variables from paired summary statistics — n, Σxy, Σx, Σy — to measure how strongly they move together linearly. The number ranges from −1 (perfect negative linear relationship) through 0 (no linear relationship) to +1 (perfect positive linear relationship).

Number of Pairs

Sum of XY

Sum of X

Sum of Y

Sum of X²

Sum of Y²

Fill in the required fields to see your result.

Key differences

	Correlation Coefficient Calculator	Correlation Coefficient Calculator
Category	Statistics	Statistics
Inputs required	6	6
Result	Correlation Coefficient (r)	Correlation Coefficient
What it does	Compute the Pearson correlation coefficient r and coefficient of determination R² from summary statistics of paired data. Use it to measure the linear relationship between two variables in research or data analysis.	Compute the Pearson correlation coefficient (r) between two variables from paired summary statistics — n, Σxy, Σx, Σy — to measure how strongly they move together linearly. The number ranges from −1 (perfect negative linear relationship) through 0 (no linear relationship) to +1 (perfect positive linear relationship).