Calculatorism

Cohen's Kappa Calculator

Compute Cohen's κ = (Pₒ − Pₑ) / (1 − Pₑ) from observed and expected agreement.

Input Data

Input Observed agreement Pₒ.
Input Expected agreement Pₑ.

Results

0.7
κ = (Pₒ − Pₑ) / (1 − Pₑ).

At a glance:Cohen's Kappa Calculator: enter parameters to compute results; complements related calculators.

Formula

κ = (Pₒ − Pₑ) / (1 − Pₑ).

How to Use

  1. Enter observed and expected (chance) agreement.
  2. It returns Cohen's κ.

Case Studies

Pₒ=0.85, Pₑ=0.5 → κ=0.7

κ = 0.35/0.5 = 0.7 (substantial agreement).

FAQ

How to interpret κ?

0.61–0.8 substantial, >0.8 almost perfect; 0 is chance.

Related Tools

References

Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.

Found a problem with the results?

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