Degrees of Freedom Calculator

Choose one-sample t, pooled two-sample t, Welch t, chi-square table, or one-way ANOVA and enter the required sample sizes.

Procedure

Sample size n

Second sample size n₂

—Choose a procedure.

How to use this Degrees of Freedom Calculator

Calculate degrees of freedom for common statistical procedures. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.