Tool
Effect size converter
Convert between Cohen's d, r, the odds ratio and eta squared for two groups.
Before you use this
Fill in the form and the result appears here, along with every intermediate value and a note on what the number does not mean.
These calculators run on the server with a plain form post, so they work with JavaScript disabled and nothing is sent to a third party.
More research methods and statistics tools
- Sample size calculator
- Statistical power calculator
- Cohen’s d calculator
- Correlation confidence interval
- Independent samples t-test
- Chi-square test of independence
- Descriptive statistics
- Cronbach’s alpha
- Cohen’s kappa (inter-rater agreement)
- One-way ANOVA from means and SDs
- APA 7 reference builder
- APA results writer
- SPSS data preparation
- All tools