Pevlika Browser Apps

Correlation Coefficient Calculator

Pearson r, r², Spearman ρ and significance for paired data.

Runs in your browser — nothing is uploaded

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How to use Correlation Coefficient Calculator

  1. Enter your values — the unit for each field is shown next to it.
  2. The result updates instantly as you type.
  3. Copy the results, or change inputs to compare scenarios.

Formula & assumptions

r = Σ(x − x̄)(y − ȳ) / √(Σ(x − x̄)²·Σ(y − ȳ)²)

t = r·√((n − 2)/(1 − r²))

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