Statistical transformations
for meta-analysis made easy
because life is already hard enough.
Stop wrestling with messy Excel files created by random colleagues 20 years ago and missing variance data. metaHelper does the mathematical heavy lifting so you can get back to what really matters (like finally finishing that manuscript).
A powerful toolkit for exhausted meta-analysts.
Say goodbye to manual conversions and spreadsheet gymnastics. We automate the boring stuff.
Apples to Oranges?
No problem. Seamlessly translate Odds Ratios into Standardized Mean Differences before Reviewer 2 even notices.
Missing Data Magic
Derive those elusive Standard Errors from p-values or Confidence Intervals like an absolute statistical wizard.
Pool Party
Accurately combine multiple intervention groups without completely losing your mind.
Ready to stop suffering?
Select a transformation category from the sidebar navigation to get started.
Technical Background
The calculations powering this site are natively driven by the open-source R package metaHelper. R users can integrate these tools directly into their scripts:
Feedback & Support
We value your input! If you have questions, feature requests, or encounter a bug, please let us know. This web application is currently under active development and comes with no warranty.
Contact DeveloperHow to Cite
Emprechtinger, R., Schwarzer, G., Tölch, U., Schreder, G., & Gartlehner, G. (2025). Assessing the effectiveness of metaHelper: A randomized controlled trial of a web application and R package to streamline statistical transformations in meta-analysis. Journal of Clinical Epidemiology, 179, 111640. https://doi.org/10.1016/j.jclinepi.2024.111640