Public health calculations, explained clearly
EpiToolkit
Simple Tools for Epidemiology, Public Health, and Research.
Use free epidemiology calculators for sample size, relative risk, prevalence, incidence, odds ratio, public health indicators, and research reporting. Each tool shows the formula, worked example, and plain-language interpretation.
Interpretation: exposed participants had 2.4 times the risk of the outcome compared with unexposed participants.
Start with your task
What do you need to do today?
Choose a practical starting point. Each pathway leads directly to a calculator, reference, or reusable resource.
Estimate sample size and review the assumptions needed for a defensible protocol.
Compare outcome risk between exposed and unexposed groups using a 2 by 2 table.
Build indicators, calculate progress, and explore program-specific reference sets.
Download colored PDF templates, indicator sheets, and data quality checklists.
Create APA, Vancouver, Harvard, or MLA references for reports and manuscripts.
Review epidemiology, biostatistics, research methods, public health, and M&E basics.
Featured calculators
Practical tools for everyday public health work
Browse by category
From surveillance measures to research reporting
Rates, risks, prevalence, outbreak measures, and association measures.
BiostatisticsConfidence intervals, significance tests, chi-square, and t-tests.
Research MethodsStudy design selection, citation formatting, and sample size planning.
Public HealthCoverage, mortality, case fatality, and program monitoring indicators.
Monitoring & EvaluationIndicator definitions, target progress, data quality, and dashboard planning.
Why EpiToolkit
Built for accuracy, learning, and field-ready decisions
Many calculators stop at a number. EpiToolkit pairs each result with formulas, assumptions, practical interpretation, and examples so users can defend their methods in reports, theses, protocols, and program reviews.
Transparent formulas show exactly how each result is produced.
Accessible explanations support learners without diluting technical accuracy.
Fast static architecture works on low-bandwidth connections and can be hosted almost anywhere.
Monitoring & Evaluation
Indicator references for public health programs
Trusted use cases
Designed for classrooms, surveillance units, and health programs
“The worked examples make it easier to teach outbreak measures without losing time to spreadsheet setup.”Public health lecturer
“Clear interpretations help our M&E team explain indicators to non-technical stakeholders.”NGO program manager
“A practical companion for protocol writing, journal clubs, and field epidemiology assignments.”Medical resident
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No account required. Every tool includes formulas, examples, and interpretation guidance.
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