Welch's T-Test Calculator
Compare two means when variances are unequal (heteroscedastic)
About Welch's T-Test
Welch's t-test is an adaptation of Student's t-test for unequal variances.
When to use: When groups have different variances (heteroscedasticity).
Advantage: More robust than Student's t-test; doesn't assume equal variances.
Degrees of freedom: Calculated using Welch-Satterthwaite equation (not n₁+n₂-2).
💡
Help us improve!
How would you rate the Welch's T-Test Calculator?
Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
📚
Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.