Multiple Testing P Value Adjustment Calculator
Adjust a family of entered p-values using Bonferroni, Holm or Benjamini–Hochberg rules.
YOUR CALCULATION
Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Sort raw values internally, apply the selected monotonic adjustment and restore original test order.
Bonferroni=min(1,mp); Holm uses cumulative maxima; BH uses reverse cumulative minima of mp/rank
Worked example
For p=.01,.04,.03,.2, Holm-adjusted values are .04,.09,.09,.2.
Assumptions and input details
A prespecified family of valid p-values. Holm/Bonferroni address family-wise error; BH controls FDR under independence or appropriate positive dependence. Adjusted values are not posterior hypothesis probabilities.
References: statsmodels: adjustment methods
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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