basic

One-Sample t-Test Calculator

t-statistic and degrees of freedom for a one-sample test.

Compute the t-statistic and degrees of freedom for a one-sample t-test from the sample mean, the population mean under H₀, the sample standard deviation, and the sample size.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

t = (x̄ − μ₀) / (s / √n), df = n − 1.

In depth

Compute the t-statistic and degrees of freedom for a one-sample t-test from the sample mean, the population mean under H₀, the sample standard deviation, and the sample size.