## Effect Size Calculator

This **effect size calculator** will help you find your data fast and free. All you need to do is add in group one and two figures and then click compute. The data is only an estimate and used for guidance in your calculation and is not a true number.

#### Group1

#### Group2

To use this effect size calculator, type in your number under Group 1 field M1. Then follow down below to Group 1 field SD1 and type in your other number here. After that, follow over to Group 2. Fill in the field M2 and then follow down to the field SD2. After you have this all filled out, click COMPUTE and your answer will be given below in Cohen's d and effect size. To start over, click the RESET button and follow the above steps to find your new answer. This effect size calculator is 100% free to use and will give you results instantly making it a handy tool to use in the workforce or while in school. NOTE: Effect sizes are estimated with errors and might be biased unless the effect size calculator is used correctly. This could lead to biased results stronger than the true effects.