Clinical calculators
Working tools for clinical research
Use calculators and structured guides for statistics, clinical assessments, pharmacokinetics, and study operations. Availability is stated on every tool: some are public, while others require an account or Professional access.
Browse the tools- Catalogue
- 18 published clinical research tools
- Access
- Public, account, and Professional tools
- Coverage
- Statistics, assessment, pharmacokinetics, and operations
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Search by task, browse by discipline, or narrow the catalogue by the access label shown on each result.
Statistics
Sample size, confidence intervals, NNT calculations
Clinical Trial Sample Size Calculator
Calculate required sample size for clinical trials with adjustments for dropout rates.
Open ToolAssessment
CTCAE grading, RECIST responses, protocol deviations
CTCAE Adverse Event Grader
Grade adverse events using CTCAE v5.0 criteria with this searchable reference tool.
Open ToolPerformance Status Converter
Convert between ECOG and Karnofsky performance status scales
Open ToolPharmacokinetics
BSA, CrCl, QTc, and dosing calculations
Body Surface Area (BSA) Calculator
Calculate BSA using multiple validated formulas for drug dosing in clinical trials.
Open ToolCreatinine Clearance Calculator
Estimate renal function using Cockcroft-Gault, MDRD, CKD-EPI 2009, and CKD-EPI 2021 equations
Open ToolIdeal Body Weight Calculator
Calculate IBW using Devine, Robinson, Miller, and Hamwi formulas
Open ToolQTc Calculator
Calculate corrected QT interval using Bazett, Fridericia, Framingham, Hodges, and Rautaharju formulas
Open ToolOperations
Visit windows, SAE timelines, study planning
Visit Window Calculator
Calculate protocol visit windows and validate visit dates against schedule
Open ToolShape the library
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Tell us which calculator or structured workflow would be useful in your work. Requests help guide additions to the catalogue.