Testing Impact Calculator


Developed by the Consortia for Improving Medicine with Innovation & Technology at MGH and the MIT Institute for Data Systems and Society

This project has been funded by the National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, through the NIH RADxSM Initiative. NIBIB is not responsible for the contents of this website.

Empowers leadership to make decisions backed by information
  • Compare common FDA-approved testing options
  • Illustrate cost reduction strategies by implementing best practices
  • Find guidance on how often to test your organization
  • Bring together a comprehensive approach to reduce the spread of COVID-19

Use this calculator to identify testing options that will help reduce the spread of COVID-19 within your organization

Discover how MASKS, CONTACT TRACING, and GROUP ACTIVITIES impact the need for testing

Create a safer environment
Important Information
Changing your mitigation strategies
may change your numbers

This calculator is designed to show you how better approaches lead to better outcomes.

The COVID-19 Testing Impact Calculator does not ensure that COVID-19 infections will not enter your organization. The calculator helps determine the testing frequency needed to identify and isolate potentially contagious people.  The rate at which potentially infected people may enter your organization is determined by the prevalence in the broader community.

The COVID-19 Testing Impact Calculator assumes that the prevalence of COVID-19 within your organization is no greater than in the broader community at the time you initiate a Screening Protocol.  One way to do this is to complete 100% testing of all individuals prior to implementing a Screening Protocol.  This will confirm that you do not have an outbreak currently within your organization.

The COVID-19 Testing Impact Calculator assumes tests are used ‘off-label’ for use under practitioner guidance when used to test asymptomatic people.  A screening protocol does not replace the need for other mitigation efforts such as daily cleaning, handwashing, or social distancing. A screening protocol may be implemented as an additional mitigation effort.


This site does not provide medical advice and should not be used as a substitute for specific medical advice. Information and materials are to inform and educate visitors. Consult a qualified health care provider for answers to your medical questions. Results of using the COVID-19 Testing Impact Calculator are to be used as a guide only and do not represent medical recommendations.