Meta-Analysis Calculators and Statistics Tools
Every calculator on this site is free, runs in your browser, and needs no account. Convert a single study result into the statistics a meta-analysis needs, pool effects across studies, and draw the figures journals expect.
Forest Plot Generator
Pool your study effect sizes and draw a publication-ready forest plot with a summary diamond.
Open toolMeta-Analysis Calculator
Combine effect sizes with fixed-effect or random-effects models and read the heterogeneity statistics.
Open toolFunnel Plot Generator
Plot effect size against precision to screen for publication bias and small-study effects.
Open toolOdds Ratio Calculator
Turn a two-by-two table into an odds ratio with its confidence interval and a p-value.
Open toolRisk Ratio Calculator
Compute relative risk from events and totals, with the risk in each arm and a confidence interval.
Open toolNumber Needed to Treat Calculator
Get the number needed to treat, the absolute and relative risk reduction, and a confidence interval.
Open toolHazard Ratio Calculator
Recover the log hazard ratio, its standard error and a p-value from a published survival result.
Open toolEffect Size Calculator
Standardise a mean difference into Cohen’s d and Hedges’ g with confidence intervals.
Open toolConfidence Interval Calculator
Build a confidence interval for a mean, a proportion, or any estimate with a standard error.
Open toolPRISMA Flow Diagram Generator
Turn your screening counts into a PRISMA 2020 study-selection flow chart and export it.
Open toolNeed more than a single calculation?
The tools handle one step at a time. If you want the search, extraction, pooling, and write-up of a whole review run to protocol, a PhD methodologist can take it from wherever you are now.
Get help with your review