T-Test Calculator

T-Test Calculator

Select T-Test Type:

-- Select T-Test Type -- Independent Samples T-Test Paired Samples T-Test One Sample T-Test

Independent Samples T-Test

Enter comma-separated values for each group:

Group 1 (e.g., control group):

Group 2 (e.g., treatment group):

Assume equal variances? Yes No (Welch's correction)

Paired Samples T-Test

Enter comma-separated paired measurements:

Before/Time 1 measurements:

After/Time 2 measurements:

One Sample T-Test

Compare your sample to a known population mean:

Sample values:

Population mean to compare against:

Important Notes:

• This calculator provides approximate results for educational purposes.
• For research or publication, use dedicated statistical software.
• Ensure your data meets t-test assumptions (normality, equal variance where applicable).