Effect Size Calculator
Calculate effect sizes to measure the magnitude of statistical effects
About Effect Sizes
Effect size measures the magnitude of a statistical effect, independent of sample size.
Cohen's d Guidelines:
- Small: d = 0.2
- Medium: d = 0.5
- Large: d = 0.8
Eta-squared Guidelines:
- Small: η² = 0.01
- Medium: η² = 0.06
- Large: η² = 0.14
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.